As regards boots, I skipped the whole bit of expensive "old-style" boots and went with a pair of CW brogans on sale. I was able to get a pair that allowed me to insert the needed supports, thereby saving me lots more money. I happened to have NCOWS legal leather already so was able to dodge that cost for myself but we still need to properly outfit my buddy shooter. Thrift stores have been slowly offering up suitable old-style clothes at a few bucks each -- some need alterations to make them suitable for NCOWS, fortunately, my buddy shooter is a professional taylor.
We have also gone to Working Cowboy class to avoid some of the cost and other problems (to us) with the two revolvers, one rifle, one shotgun classes.
Lars