what penny auction sites are legit?

ok so ive been on a couple of sites and they allways charge the retail value as the final auction price, is there any sites that doesnt charge this?

None of them are legit, by definition:
usatoday30.usatoday.com/tech/column...
mywot.com/forum/14024-penny-auction...
In short, they're not "auctions" at all, but a form of gambling.