Another possibl source of chemicals is your local camera flea market, swap meet, photo fair or whatever they call them. I once saw a local photographic store selling all their chemical inventory in a photo fair. No, it's not selling. It's dumping. They have a few box full of all they had from their store and the price was "make an offer". I took all their C-41 stuff for something like $20. I regret that I did not take any of their RA-4 stuff. I could have that too for maybe another $10. I don't print with my enlarger any more.