An average show might cost me about 1000$. I pay 45$ a day for coaching, 130$ for local trailering, 200-300$ for a stall, about 100$ in random office fees and then the rest in entries. It's kind of stupid..... I pay for them myself, but can't afford to do a lot of them (for obvious reasons). We only have two shows now, Anderson's and Spruce Meadows. I have never gone by show rating, but I am assuming they are both A rated. They are pretty well known, and range from cross-rails to grand prix. We usually trailer over on tuesday or wednesday and then come home on sundays when we are done.
I use to do a lot of day shows at my old barn, and they would cost about 500$. It's mostly the trailering, coaching, and stall rentals that really kill the costs. The showing is the cheapest part. It helps if you know how to braid as well. We are planning to go to thunderbird this summer and we estimated it would cost about 3000$ for one week, including trailering, hotels, etc... Luckily my parents are willing to loan me their big camping trailer, and I have been saving up my vacation pay for over a year. I shouldn't have to pay too much, which is really nice.
Shows kill, i'm not going to lie. People who compete in all the shows are bloody rich.