Amazon has some pretty cheap, and depending how you want to do it, buying the console and charger separate, could end up being cheaper. Take a look
HERE, and you'll see what I mean. Some of them are around 30 dollars, but no charger. Then there's some that give you the charger, closer to 40 dollars. I took a look and found the chargers separately for only about 4-5 dollars, so, in theory, you could get it cheaper that way after you factor out your tax and shipping charge (if any).
Hope that helped.