i've got a pretty good sized game collection, mostly Nintendo stuff. according to GameValueNow (it calculates prices similar to PriceCharting) i have a total value of $22,000 in games and accessories. It's really hard not to cash out, as i can't see these prices staying at this level for much longer before they start to decline again. On the other hand, i'm so happy that i've been doing this for as long as i have so i was able to get all the games i've wanted for more reasonable prices.
I long for the days when i didn't buy Bubble Bobble Part 2 (NES) because $50 was just too much for a 15 year old game. But looking at today's price of $395.64, i'm certainly glad i eventually talked myself into spending that $50.
i've got a complete Sega 32x and complete Virtual Boy collection (both loose, no boxes or manuals). Not highly desirable, but i got them because they were neat oddities. Jack Bros (VB) is now $591, i paid ~$150. Spider-Man: Web of Fire (32x) is now $338, i paid $99 (and both were way more than i wanted to spend!). I never would have been able to grab these collections at current rate. Thank god i didn't go for Saturn or SegaCD. those prices were already crazy before all this happened!
edit: https://collection.gamevaluenow.com/share/collection?id=2745
adding a link, since @Arealadid.