Hi stentiford2006,
Welcome to SaleHoo =D Great question to start off with!
Another thing you can do is try googling the 'supplier's name'+scam and if they have scammed other people, I'm pretty sure you will find various posts on other wholesale forums.
After about a year of going through the SaleHoo forum, it would quite safe to say that for ANY product made by Apple, they (Apple) would still be your best choice!
Also, please be careful with Chinese suppliers claiming to sell you an authentic iPod/iPhone or any other brand name products for that matter, 9 out of 10 times they products usually are not real.
Cheers :)