What are your favorite places to get show clothes?

I'm in the process of buying new clothes to show in for school this fall. Right now, I'm more concerned about western show clothes than huntseat clothes since I'm surely going to be showing western and huntseat is on the back burner for the time being.

As of right now, I have my chaps. I managed to find a really good deal on ebay. But, where do you guys typically go to find your show clothes? I still need a rail jacket and hat. I've been searching ebay, and have a bid on one right now (but I always manage to lose since I'm never home when the bidding ends).