There's a seller on craigslist selling a 32gb wifi white iPad 2 for $100 under retail ($550). He said its a replacement iPad 2 so it does not come with a box. He gave me a serial number but since the iPad has not been registered in iTunes, the warranty information does not show up on apple.com What else should I check for? Any scams out there? Just want to be sure I am getting a good iPad for my dad for Fathers Day. Thanks for all your help.