The pandemic has created a general retro market bubble, but all this shit with Wata Games and Heritage Auctions is making prices even more inflated. Glad I got the vast majority of games I wanted to add back into my library a couple years before things got out of hand. Got a loose cart of CT a couple years back for around $75 and found a manual for $12.
You can still find some good deals in Japan (not on Ebay, though), but if you want US versions of even slightly sought after games (even common titles) for any console right now you're going to be shelling out the Benjamin's.