Retro games these days priced in the 50 dollar range will either stay in that price range or go up in price down the road for the most part. I think with the way the internet is and particularly youtube, more and more people will find out about these kinds of titles and with digital distribution taking over, people will want hard copies. I think if there is a VG crash, it will be due to digital distribution- people don't want to rent, they want to own and they want to own a piece of history. I don't mind paying in the 50 dollar range for a few Genesis games, but I usually hold out. I have most of the rare or more sought out titles aside from some of the SHMUPS and Castlevania Bloodlines but also at this point my collection doesn't need to be full of complete games.
In my world of Genesis, I beat Mega Man 2 today via my Wily Wars repro. That game is so hard. I had no idea what I signed up for. I love the game, but I wish it wasn't broken in some parts...forcing you to play for continues and no reward for accumulating multiple lives. In the latter stages I simply passed up lives and relied on continues because if you run out of power for an item you require, it's game over! Mega Man only gave me problems with the Mega Beam, MM2 had multiple points where you could get stuck and just have to kill yourself on specific jumps and bosses. So brutal. Glad to have beaten it. Looking forward to Mega Man 3.
I love the aesthetic of Wily Wars and the music uses the Genesis pretty well. Very strong showing on the Genesis in my opinion.