All of the shows I've done charged a few dollars for shoppers to enter. They also sell baked goods and have raffles. It seems to me that as long as there are a lot of shoppers and raffle ticket buyers, the sponsor, usually a local church or school for my shows, will make money. That part doesn't seem to matter about who pays taxes or not. I think when vendors are not there the following year it is more of a personal/business matter. I'm not getting what taxes have to do with whether a vendor is invited back to a show.