A legitimate dropshipper will never ask you to pay a fee because it should cost nothing for it to dropship for you. Also, ask the dropshipping website for a product list so you can see what items you will be selling and at what prices. If the prices are similar to the ones on DVDDropship.com in that they are exorbitant, then you will know that the site is a scam. You also have to be careful with scam dropshipping sites sending out fake price lists. The bottom line is don't pay for a dropshipper.

My only other suggestion would be to do a lot of review reading and research about the site. If there are too many good reviews on one site, check to see if it is associated with the dropshipping site itself. If it is, you can safely assume the dropshipping website is posting comments about itself, which is never legitimate.