Well, I found this site here:
http://www.resellerratings.com/store/TinyDeal_Direct.
It only has one review though so that's not much to go by.
If you are going to buy from them here is what I think you should do to try to cover yourself:
* Ask them straight up, why are their prices so cheap?
* Ask them if it's a true, geniune 4GB player.
* Ask them what their refund or replacement policy is. Will you have to pay for shipping to send it back if it's faulty or has hacked memory?
* Finally, mention to them about this site. Tell them that this site has about 18,000 dedicated members and that when you buy from them, you will be putting a review about Tiny Deal Direct on this site about the player.
Hopefully that will give you something to go back on. How will you be paying? Previously by credit because at least then you can back track it and claim a refund should you have any problems or not get the player.
Hope that helps.