Ok, first off, don't panic. Not all prices are going to plummet and not all games.
But, when it comes to N64 loose carts, I expect the values to absolutely plummet in the coming weeks. The values of loose SNES and Genesis games could also take a huge beating. Same thing goes with loose Game Gear, Game Boy and Game Boy Color games. Playstation 1 values could also fall quite a bit.
Ok, here's the theory:
I'm not sure how many Game Crazy stores are Nationwide, but I think it's a couple of thousand stores or so. When you consider that these thousands of stores are blowing out all their retro games for $5 each or less, well that Tsunami that's coming is going to have a ripple effect.
You can better believe that Ebay Profiteers will get word of this sale, and they will be all over it like flies to ish. Ebay will see an absolute avalance of Harvest Moon 64's, Ogre Battle 64's, Star Craft 64's, etc, etc, etc.
Now, things might subside after a few months, but believe you me, there is going to be a fall in values for everything that is affected by this sale.
Now there are lots of things that "aren't" going to be affected by it. Like TurboGrafx-16, Sega Master System, Atari Jaguar, Neo Geo and other systems that Game Crazy doesn't carry. Complete games for all systems won't be affected very much, since most of Game Crazy's stuff is loose cart and loose CD's, and tons of rental stickers, etc, etc.
I think these items are going to be affected the most, in this order:
1. loose N64 carts - If loose N64 games had any value before this sale, they won't in a few weeks. The market is going to be absolutely flooded with loose N64 carts. Anybody that makes lots of money selling loose N64 carts on Ebay is going to need to get a real job.
2. loose common but in demand SNES games - There are alot of loose SNES games that sell pretty good on Ebay. Games like Super Metroid and Mario Kart and Contra III and Legend of Zelda and Super Mario All-Stars, etc, etc. Most of these loose carts are only valued at about $5 in the DP guide, but they sell for about double that on Ebay, some even triple that, especially after you factor in the extra profit that people squeze out of the shipping and handling charges. Well Game Crazy's around the country have tons and tons of these types of games. Usually these games cost $12.99 or $14.99 or $19.99 at Game Crazy before this sale. Some even $24.99. Well all the Ebay Profiteers had to avoid buying these games at those prices, but at $5 a pop, they will buy them up with reckless abandon.
3. loose Genny Games - Genny games don't have much value loose as it is. For some reason it seems the Genny is the red headed stepchild of loose game values. But after this sale, it could get even worse. That sound you hear is a thousand Herzog Zweis and Shining Force II's hitting Ebay simultaneously.
I can go on and on about this, but I have to go to sleep.
Anyways, discuss amongst yourselves. My children!