Well if you live anywhere near Atlanta, then you are in for a treat. Go visit Americasmart.
800/atl-mart. It's 3 stories of wholesale vendors, plus they have huge trade shows throughout the year.
You will need either a business licence, or a tax id. as it's not open to the general public.
But it's deifnately worth the trip..Plus most of the venders give away loads of samples if there is a trade show going on. Too, if there is a trade show going on during the time you plan to visit, you will probably want to plan for an overnight visit...