Sunday, September 26, 2010

Peak Load pricing, a simplified application of Revenue Management

Let’s get started 
As explained earlier, the goal of this blog is to spread best practices as well as practical tools and techniques for SMEs to apply Revenue Management to their business. Recalling the principles mentioned in our previous article, one of the common reasons for the implementation of a RM system, is the management of the perishable aspect of a given service, and the high opportunity cost of missed sales. If, on a Saturday night, a theater gets full for a certain movie, it will miss the next sales forever – if we assume the potential customer may not buy a ticket for another movie, which is often wrong.

This leads to a crucial aspect linked with missed sales, a high seasonality factor combined with limited resources: Peak Loads. Peak loads have to be managed in order not to miss any chance to maximize revenue for the market (time period/service). For example, you cannot create instantly new seats or remove them in a theater, so a given capacity has to be optimized. In this article, we will share with you a basic pricing tool that we have developed to help you to manage your peak loads – if your business is concerned. As we will see this requires a minimum of demand forecast, and an idea of your customers’ behaviors versus price changes.

The structure of costs is a good reason for implementing RM techniques: the high share of fixed costs (buildings, maintenance, staff…) makes the business harder to operate and the anticipation of demand key. Indeed, if the variable costs per unit are low, maximizing profit implies maximizing revenue. It is a major aspect, since a common Peak Load strategy is to use the peak period revenues to compensate the losses – if any – generated when business is slower, as the capacity is hardly modifiable over time.

With those high level features and “pre-requisites” for implementing a revenue management system, we can already draw a series of activities where Peak Load pricing strategies are applied, or could be applied:
- Rental businesses
- Hairdressers (explained by Robert Cross in his book)
- Parking lots
- Internet cafes (experimented in 1999 by Easygroup in the UK)
- Theaters and concert halls
- Public meetings and events 
- Road toll

Peak loads or the first critical issue addressed by a RM system 
Let’s start with the core subject. Peak load is a key issue, which motivated the creation of RM systems. Is a corporation able to identify peak loads patterns, or not? If yes, can it change the demand to avoid these peak loads? Often, historical data from past cycles or knowing the market patterns are enough. Some companies usually know their customers well, other, have to go through market studies and business intelligence reports to identify customers’ cycles…

Knowing your peak load, when the demand tends to exceed the capacity, is crucial. Even better, is being able to steer your demand and volume. Hairdressers in France for example, found a way to avoid high Saturday afternoon peak times, by opening until late evening during weekdays. Does it work? Does it deter customers from coming massively on Saturdays? Is that enough, or would a price difference spread the demand over more days of the week? Probably, as it is the case in the hospitality industry, where part of demand is transferred to a time period when booking level is low.

On a day to day basis, you don’t take your decisions based on a scientific datamining of past customer behaviors and market information. Indeed, most operational decisions are taken in a degraded situation, without relying on precise quantitative data: a certain level of uncertainty is assumed.

An interesting article article from James Dana, Using Yield Management to shift demand when the peak time is unknown, highlighted the capacity of an organization to manage unanticipated demand. “The equilibrium price dispersion can efficiently shift demand and lower capacity”: the article demonstrate that when companies set prices in accordance to demand at time t, they are able to steer demand. However corporations must be able to set probabilities for sales at a price X and Y (where X≠Y), and then be able to set these prices (X and Y), with the overall constraint of making a profit.

Let’s remind that this constitute a win-win situation, where both the consumer (who pays less, against a tradeoff regarding the time of consumption) and the producer (who achieves a greater profit) increase their surplus.

Our simplified model 
We have designed and integrated a simplified peak load management model to this article(see below). From a given capacity and unique price, the model calculates the optimal pricing for the peak and non-peak periods. At the center of this revenue optimization model is the concept of price elasticity. The price elasticity measure the responsiveness of demand to a price change, basically: % change in demand divided by % change in price. We will write a further article on price elasticity estimation. For the moment, we take a basic linear elasticity in our model, which we estimate from your information and a rule of thumb (see below).



This model is highly simplified, and overlooks several important elements. It assumes linear price elasticity, hypothesis that we will review within few days. The results should be put in perspective, taking the following issues into account:
- The competitors reaction
- The size and concentration of the market
- The overall consequences on the marketplace: if every player apply the same pricing strategy, will that expand or shrink the market overall?
- A seasonality pattern that adds to the periodic peak load pattern

Next items to come soon: Skimming strategies, Profit Management, Dynamic pricing and effects on the organization, and many others! Any feedback on the blog is greatly appreciated!

Monday, September 13, 2010

How could I apply revenue management to my business ?

In his book, Revenue Management: Hard-Core Tactics for Market Domination, Robert G. Cross defines revenue management as “the application of disciplined tactics that predict consumer behavior at the micro-market level and optimize product availability and price to maximize growth”.

Most people associate RM with complicated pricing models, state of the art IT, and high-flying mathematicians. Needless to say, it helps. Revenue Management relies on a few basic principles. Everything is just a matter of implementation, in accordance with the sector, the organization and the size of the company: you don't need SAP to manage a hair salon; you don't need to be a Rube Goldberg machine to take the first steps towards the optimization of your revenue.


Indeed, Robert G. Cross summarizes revenue management with
7 core concepts:
•   Focus on price rather than costs when balancing supply and demand
•   Replace cost-based pricing with market-based pricing
•   Sell to segment micro-markets, not to mass markets
•   Save the products for the most valuable customers
•   Make decisions based on knowledge, not supposition
•   Exploit each product's value cycle
•   Continually re-evaluate your revenue opportunities

Principles

Three basic constraints shape the RM practice:
•   The ressources available for sale have to be in a fixed/limited amount
•   The ressources have to be "perishable": there should be a time limit after which the ressources loose their value
•   The different customers must be wiling to pay a different price for the same amount of ressource

If in your business, the costs are mainly made of fixed costs (ie, high % of fixed costs vs variable costs), then revenue management is a key factor to optimize your profit: as variable costs are rather low versus revenue, each increment in revenue will increase cost absorption, and impact directly the bottom line.


The goal is to maximize revenue for a given product, within a certain time horizon: the company should aim at providing each unit to the customer exctracting the highest price possible from the customer base. Ebay is a good illustration for this, and a simple way to encompass these principles for any product.

To trigger the purchase, Revenue Management uses
two main leverages: price and inventory. In the price-based approach, the customer buys as soon as the price has decreased to her/his real or sensed expectations. As we will study in a later article, theaters could optimize their occupancy rates and then boost their sales by using this approach…
In opposition to this, Talluri and Van Ryzin, in their book The Theory and Practice of Revenue Management, highlighted the quantity based view, where the leverage used is the remaining inventory. As most applications of Revenue Management occurred in industries where the inventory is critical and highly perishable, the inventory approach is prevalent today.

Customer segmentation and pricing fences

It's obvious: know your customers.

What segments can you identify among your customers? On which criteria is this segmentation based? What price are the customers from distinct segments ready to pay for your product(s)? How are they sensitive to price fluctuations? What are their purchasing patterns over time?


You should be able to answer
each of these questions, ideally with quantitative answers. The idea is to be able to segment customers on the basis of their willigness to pay, and to be able to charge different prices to different customer categories.

Therefore, customers should not be able to arbitrate between the different prices proposed for the same good. Indeed, the pricing has to be based on adequate and efficient fences, such as:
•   The time of purchase: as detailed in our previous article, the airline industry charge different fares, depending on the booking time.
•   The creation of a costless customer value: concert tickets are a good example. Certain tickets will give personal access to the perfomers before/after the concert, against a substantially higher price, and costing nearly nothing to the organizer.

Of course, this will depend largely on the product type, quantity and the opportunities for offer customization; but the focus has to be centered primarily on the customer.

 
Marketing management and ethics
Every move towards revenue optimization should be made in accordance with a company's marketing strategy.

As RM relies on price discrimination, it can stir up customer resistance, and harm the customer relationship. Long term customers can end up in the higher price range while expecting a well deserved discount/advantage. As the development of RM systems tended to weaken their customer base, the airline carriers answered by implementing the frequent flyer programs. Thus, RM practice
has to be integrated within customer relationship management, has a tool to secure customer loyalty.

It also has to be consistant with the management of the company's image: in 2002, when Deutsche Bahn tried to implement RM on its "frequent loyalty card passengers" (
see article), it faced customer disaprovement and a declining number of passengers, and finally step back to fixed pricing.

In terms of princing, a common fear is that customer segmentation could be based upon unethical criteria. This has to be adressed through the practice in itself, and communicated consistantly.

 
Our blog
In the following articles, our goal is to illustrate these generic principles. For this purpose, we will study successful and unsuccessful RM practicies in various fields, discuss the potential application of RM principles within small and medium businesses, and try to develop simplified pricing and decision tools.

Revenue Management Tools

Sunday, September 5, 2010

Revenue Management and its applications: Airlines

A brief context of the implementation
Revenue Management systems (also known as Yield Management) were first implemented at American Airlines and Delta Airlines about 30+ years ago. Robert Cross – now president at Revenue Analytics, and author of the famous Revenue Management, Hard-core tactics for market domination – implemented this system at Delta. Robert Crandall – retired CEO at AMR Corp. and founder of Sabre distribution system – implemented it at American Airlines.

At that time, airlines used to set prices per class of service and per season.

In the hospitality industry, the implementation of a Revenue Management system was an answer to the necessity to steer an entropic market, with unreachable and numerous customers: every flight and every route represented new markets, where revenue had to be maximized. Revenue Management systems enabled continuous growth of travelers, (who were booking tickets over the counter at that time) along with the development of global distribution systems (SABRE, and later Amadeus), and the very first strong information systems.

The first preoccupation of early adopters of Revenue Management systems was to face the growing competition and the crawling crisis. Long story short, marketing efforts to stop the fare war were not enough, and a backroad between supply chain management, marketing, and information systems was the creation of Revenue Management systems. Revenue Management systems aimed at controlling inventory and maximizing the price of each seat contingent on demand in a real time system. The primary goal was to repair the market. In addition to the fare war, the expansion of the low cost airline PeopleExpress forced the market to offer more competitive call fares, such as ”ultimate super savers” by American Airlines in 1985.

The way it works in the airline industry…
As you may understand, Revenue Management is a very sensitive topic within airlines, but some of the key features are common to most carriers (including both flag carriers and low cost carriers).

Basic principles: How a plane gets filled
The fares are mostly function of time and load factor of the aircraft. During the weekdays, the main goal is to separate business travelers from leisure ones. During weekends, it is the contrary, which affects significantly the perspective for revenue: the strategy aims at having less but more profitable customers during weekdays in order to reduce operational costs. Every flight / route combination (one origin and one destination) is managed as a new service, where profit – and consequently the load factor - must be maximized. The more filled-up a flight gets, the more expensive your ticket will be. Besides, airlines usually like to offer tickets with distinct characteristics: flexible, reimbursable and re-bookable with or without fee, or non-flexible (simply put, if you don’t use the ticket you lose it).

Assuming that bookings increase over time, as a linear function, here are two graphs representing the evolution of the fares function of number of bookings (and so function of advance booking):
fare curve airline
revenue management
fare curve airline study
From what we explained in the previous paragraph, fares should increase with time. However, praxis showed a real difference. The second graph is the relevant one: there you can assess the dynamic of Revenue Management and its interest for a corporation - adapting exactly the pricing to the market situation based on historical data.


Note that the charts presented above, represent an observed trend, and not precise data to be analyzed in details.

Fares and booking systems
To model pricing in their revenue management system, airlines use price brackets, called “booking classes”, which contain a reference fare, (i.e. the flexibility and availability during the weekdays). Each booking class can be opened or closed according to the aircraft load factor and the achievement of the profit objectives. Cheaper booking classes have limited inventory (at the bottom of the ladder), last seat availability classes are available as long as a seat is available in the aircraft (at the top of the ladder).
yield management fare table airline
Every airline has its own coding system for the reference fare (booking class + fare basis). Airlines also like to set low fares with more flexible reference fares for their corporate customers. This is a way to bias the market. This is what a travel agent can get in its global distribution system.

If you would like to have a better understanding on how Revenue Management systems work in a real life case, the MIT proposed a
simulation of an Airline Revenue Management.

…and in other businesses
We want this blog to be interactive, and our goal is to gather a community of beginners and insiders, trying to create inspirations for businesses. Therefore, any valuable input is much appreciated.
More specifically, we invite readers from any background to submit ideas of business sectors where Revenue Management principles could be applied.