CASH CARDS, MOVIE PASSES, and GIFT CARDS: Studies require different amounts of paperwork, appointments, and time. For this reason, each study offers its own level of compensation. Compensation usually takes the form of a MasterCard© Cash Card that can be used like a debit card. In some cases, movie passes (AMC, Cinemark, Regal), or gift cards (Target, Blockbuster) may be offered. Of course, all study services and supplies are free.