I only go to camping or fourbie shows if I want to compare makes/models/manufacturers etc. prior to making a major purchase. To do that, other than at a show, I need to take a day off work, as most of these places don't open at times that fit with my work, then knock myself out driving all over the city using fuel and paying for parking (in most cases). Maybe only get to see three local guys. Whereas at the shows, I get to see them all within walking distance. Plus I not only get to see the local guys, I get to see a heap of interstate manufacturers at the shows. Therefore I don't mind paying for parking and an admission ticket.
If I am looking for a snatch starp, I wouldn't be wasting my time going to a show. Never found a decent bargain at one yet. Always better prices during their sales or online.
KB