Just speaking for myself here but I try to avoid spending cash at all. I prefer a good bargain or swap trade deal. Saturday I traded two magazines for a Star M30 I no longer owned for a brick of CCI #41's. The shop had a gun come in from a police auction with no magazines (some counties around here shred hi-caps for some unknown reason) and the owner wanted to sell it with factory originals, not reman's. He had primers, I had magazines - I call that a win-win.
What were those mag's actually "worth"? To me, nothing - but I took a brick of primers for them happily. Always keep your options open. Search your "trash" for treasure every once in a while, too.