Next check them out with the Better Business Bureau
, both online and where they are located and if they have complaints take them off your lists. Now that you have the list narrowed down, call them up and ask for references of satisfied clients, they should be more than willing to do so. If they pass this test then find out what there pricing, shipping, and return policies are and if they are acceptable you are in business. Don't judge just on price alone, if they are far cheaper Wholesale Nike Air Max2009 they are probably knock offs.