Make Heavy Purchases With This Card The best purchase to make using your reward card is to buy expensive products like a Car or a Plasma TV. With just this single purchase, they immediately add hundreds or even thousands to your spending value, thus increasing your points. You have a couple of advantages wrapped up with this. One such benefit is of using credit card for these purchases are protection against any kind of fraud and extended warranty service. Avoid downsizing major purchases that you don't want or can't afford just because "you'll get the rewards."