I am a cheapskate when it comes to memorabilia. I've bought all but one jersey on eBay for $10. I only bought former Ram greats, so SJ, Ike, Faulk. The only new one I got was for my son and that's an Aaron Donald on sale at the time for $65.00. So no regrets there.
My only Rams memorabilia regret is in what I did not keep. My Rams jersey as a kid from the 70's and my Rams winter coat with yellow vinyl sleeves and matching hat. My kid would have loved them.
Cheapskate 1, meet cheapskate 2, lol.
I've spent $$ over the years collecting Rams themed sportscards, posters, videos, a jersey, toy helmets, magazines, game programs, books etc, but that's back when they were cheap by today's standards. So not a waste. I honestly can't think of anything I wasted money on. Most of the Rams shirts and 2 donald jerseys were given to me as gifts. That 2003 Pisa Tinasamoa jersey that I gave to goodwill a few years ago was also given to me. So if I had to list something, it would be sunday ticket/directv during the Rams lean years. (Been a free streamer since 2011)
I don't buy Rams merch any more and won't be in the future. So I'm sitting on my collection for now. But some of these stories (Blackmon wow and a 6k SB) of worst financial disasters deserve top billing!