Calculating and Expressing Valuation. It can be dif- ficult for a user to accurately value their ideal resource bundles. There needs to be a simple and effective way for people to express their resource need and calculate its value. To stress this point, imagine a market inter- face that asked the user for their valuation, one ques- tion at a time, over the entire space of good combina- tions. This painful approach would require the user to think about their valuation for a whole slew of bundles, a time-consuming and sometimes difficult task. An area of market design that has received almost no attention for computer resources is in the user.