I have not heard of the company you mentioned for drop shipping, but they might be just fine. My advice is that you do not sign up for anything that is a lot of money up front or monthly. Start small and test it out. You should be able to research their items, what they are selling for on eBay by searching the completed listings, and figure out what your profit will be. A good site with thousands of manufacturers is Worldwide Brands.
Using a drop shipper
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