If you have a sewing machine, have access to a sewing machine and have sewing skills, or know somebody with sewing skills that will do you a favor, you can make outdoor clothing that fits works well, and is pretty cheap. My wife has made me a variety of polartec clothes that fit and work well.
Store brands can be quite good, and cheaper than the name brands. In particular I've found the REI/Novarra brand to be relatively cheap, but still very good quality.
Speedo