A Guide to Getting Into Focus Groups
Abby B

Some of the time, they pay you in Visa gift cards, and it’s hard to remember how much you spent, since those cards don’t offer a way of checking your balance.

I’ve found most cards have a website you can check your balance at. Also, to get ride of the pesky <$2 balance buy an amazon (target, walgreens, etc.) gift card online to use it all up.