Look, nobody is talking about every single game in a sealed collection being a 100 or a 95 on whatever scale it is that is popular right now. However, I don't have anything sealed in my collection that I would characterize as below an 85 on that scale. Admittedly, I started collecting a long time ago toward the end of the NES era and was able to buy much of what I own new in a retail store, but for those few games I never picked up and have to resort to other sources, I will wait if necessary to find one in that condition. Frankly, it doesn't really take long to find most games if you are prepared to buy at a premium when they pop up. Does anyone really think games like Chronotrigger are once in a lifetime opportunities when it has been available sealed on Ebay 8-10 times in the last six months alone?
Whether you want to believe it or not, this forum only represents a very, very small group of sealed collectors, and reading and occasionally posting on this forum, it's pretty clear to me that how many of you run your collections is different than how I and a lot of other collectors I know do things. For example, I rarely buy from Ebay, not only because prices get inflated, but mostly because it is very hard to tell what you are getting from pictures. I also don't take lesser quality stuff in the hope that I can find a better version to swap it out for down the road. I understand that these are all mass-market items and even for a low print run game, there will be literally hundreds or thousands of sealed copies out there that will eventually turn up. I get a lot of my stuff from fellow collectors, from classic game collector meetings and shows, from local stores when I travel on business, from wholesalers that have stuff in their warehouses, from on-line retailers I trust and from foreign auction sites as needed. I really can't say that I have ever had a game elude me for more than a year or two.
I guess I would just close by reflecting on the prices for comics and remind everyone that it is the highest end of the market (VF or better) comics that have appreciated in value the most percentage wise from the silver age and the lesser quality stuff has typically maintained its value, but has rarely grown much more than inflation year to year. I suspect it will be much the same if sealed game collecting ever takes off in that way.