I own a small gift shop in Wisconsin. Lately I have been purchasing products from other stores at greatly reduced prices and then reselling them in my store. Is this illegal? I do have a sales tax id number and business license. Another store is trying to say that I can't do this, but I do not see why not, since none of the merchandise is trade marked or brands owned by these stores. You can find these items at numerous other stores. Thank you for any advice.