Like everyone else has said, "it depends." I've spent up to $1500 for a show outfit; pants, chaps, shirt, hat, and saddle pad so I would match, down to $2 at the Thrift Store. In fact I just totally scored at the local Thrift Store. I got 6 mens pearl snap button down shirts, that look like they have never been worn, for $10.
I'll be using these at the little training shows we have around here locally. Especially come summer. I am not putting on polyster or rayon and riding around in 100 degree plus whether. No indoor arena's around here, no they like us bake.