Covid exploded alot of that late 70s to mid 80s stuff. I do graded cards loved the cards as a kid and decided to get the one I had or wished I had as a kid but nice graded conditioned ones I have a nice case to display. Past then early 90s I only have a few select players that i truly admire. It's hard to keep up on value with all the one offs and variants now days. The hot guy now is CJ Stroud. You can have a rookie worth 5 dollars and another that looks exactly the same with some wierd variation that worth 500. It's almost a full time job keeping up with it all. But the point I was going to make I got a Montana rookie graded 8.5 also for about 125 before covid now good luck finding it for under 450.