I've used these on several occasions, and they're real lifesavers for those of us who don't like using our regular credit cards, since I can't spend more than I put on it. The $5 charge per card is a bit steep, but not too much of a problem when you're getting larger amounts. I also like that these don't charge $2.50 for a balance inquiry like most do.

Also, they make amazing gifts. I have an 11 year old,who is hard to shop for, she he's been getting these lately.