I mean as someone who actively has bought games (sealed, CIB and loose) pre and post WATA, my personal experience is my example. The amount of money required to purchase certain items. I’m working and don’t have the time nor energy to break down stats for you. Nor do I care enough frankly. And by rare carts, I’m referring to your stadium events, NWCs, etc. of the world. I don’t think WATA has had much of an effect on a super Mario 64 or contra cart.
I really don’t know how you can argue the other way. Just do some elementary research or talk to a few OG collectors.