To the OP: But the shortest Ebay auction option is 24 hours...How would the same item be sold 3 or 4 times in "only a couple of days?"

To Anonymous: But if you were only outbid by 1 cent--and that is how much you were willing to pay for the game--then wouldn't that actually be a pretty accurate account of how much value the item might hold with potential buyers (especially if the same item keeps getting relisted over and over again without a real person winning the auction)? Surely the 1-cent difference between your max bid amount (which would be a 'real' sale if you weren't outbid by 1 cent) and the reported 'fake' sale price wouldn't be enough to justify spending the time or resources on filtering and removing such sales, right? Even if it was justified, it would seem that removing the 'fake' data over a potential ~$0.01 difference wouldn't have any significant affect on a game's value as reported by VGPC, or so I would think. 

100% support this idea and would love to see any integration with Mercari, if possible. Maybe "integration" isnt the correct word. What I'd love to see is Mercari sales data factored into the established fair market values that we see here on VGPC. In fact, the "Video Games" category is Mercari's number one category in terms of gross sales (source: Mercari.com).

On a personal note, Mercari is where I do a fair amount of purchasing (~$100/wk.), and it's where the bulk of my sales happen too.

Good suggestion, I think.

I don't necessarily disagree with some of what you've said about the newer NES games and such (i.e.,that it could perhaps be organized slightly differently so that all of the classic titles aren't affected by the newer games that have been released, catalogued, and entered with the 'Homebrew' notation), but everything you say after that is just not very easy to read as a "Feature Suggestion/Idea." Instead, it seems as if you're making some assumptions (rooted in nothing except speculation that's already skewed by your apparent bias) about this site, the owner(s), and the processes used to give the prices we see on the site. And the manner in which you present your discontentment with VGPC is just downright rude, disrespectful, and unwarranted; there are certainly ways to voice yourself without being hurtful to others, whether there is agreement or disagreement. Also, I can't find any immediate or prominent examples of 'rare games' that haven't sold in over a year but that have prior sale prices of "$100 more [than] what [VGPC] value[s] it at." Maybe I'm misunderstanding, but I see games sell everyday that most would consider rare and their sale prices are usually very aligned with VGPC and totally within what one would expect a valid range to be for determining average sale price and value. I'll just stop there because this is already more time than I'd planned to spend writing this, but I could go on. I just felt compelled to advocate for VGPC and its community.