where to look first?

Be a bit more specific?

im looking for a reliable, innexpensive retailer for clothes one might wear to a cowboy shooting event.  nothing fancy

Wild West Mercantile and Texas Jack's usally have pretty decent prices in their "Bargain Corral" sections.

What size ya need?  I have way too many clothes for the amount of shooting I get to do these days.

I am getting out for now and selling all my stuff. 2000 rounds 45 Colt ammo, tons of 12 gauge, 2 5 1/2 " USFA 45 Colts with Elk horn grips, Cimmaron 24" 45 Colt 73 Win copy, 10 or 12 pair of pants, 38 to 40 waist long length, several hats, Tony Lama mule ear boots, spurs, Rick Baughman money belt and holsters, cowboy cuffs, numerous shirts and vests, coats etc... Let me know if you fellas are interested. I am SASS number 48542 Cole Sackett, Thanks Sergeant206 IM for phone number if needed

http://www.cowboycorral.com/about.htm

http://www.texasjacks.com/Home.htm

Check the thrift stores for used clothing and have the wife do some alterations.