If you do business with those chinese fraudulents, use paypal in combination with your creditcard. this will give you the advantage of being able to stop the payment when the goods are not delivered, filing a complaint with both paypal and your credit card company.
Also, it will be useful to check out who is the domain registrar/registree using http://who.is/
. If the full set of data on the domain (name, adress, telephone etc.) is available, it is less likely that it is a scam. Also look up other people's experiences with the particular seller.
Anyhow, the father of a friend of mine fell in the trap of such a site. After full payment he got a mail from the seller telling him that the Chinese customs would not let the package true and that, if he wanted to receive his goods, he had to bribe them. Of course the Chinese firm offered to do this for him, trying to lure him into transferring more money still. Long story short, it just a scam like the "Nigerian Prince" scams.