I feel like when selling consoles we should have an option to add "with controllers" and add how many, and also "with cables" and choose either av cables, power supply, or both. I try to list below recommended, but listing it as "item only" does not include the fact i could be including controllers and cables which add value.

This might be a far stretch but that being said, maybe even break it down further. Like for genesis we have 3 button and 6 button controllers. With 3 button there are the old ones with red on the letters and d pad. Those ones tend to be a little more in value than the later. The 6 buttons also have more value than 3 buttons. Same could be said with n64, different colors mean different values. I would like to think i am not the only one who feels this way.

I searched through all of the Kirby’s Epic Yarn listings from Goodwill, and almost all of them said they had the case, but they were listed in loose! Please fix this.

I have seen a plethora of ebay auctions whereby shipping is $12 or $25 etc. and while the actual sale price may appear low the offset or additional $$ is garnered through higher shipping fee's than what the shipping charges actually are which in turn skews the actual price listings shown here

As an avid PC big box/small box collector, it would be immensely helpful to download and see all PC & MS-DOS games/prices/release dates in the spreadsheet export so that I can keep better inventory (using pivot tables and whatnot) of my current collection and ensure I'm using standard names for all games in my personal spreadsheets.  

Add some plug n play coleco tellstar stuff and other things from the first generation.

I would love it if you started tracking direct from Nintendo Refurbished models.  They come sealed from Nintendo and can be sold sealed which is a major plus.  

Preorder bonuses are oftentimes included in used game sales to increase the value. Example: Fire Emblem Fates Special Edition with the three character keychains. Some websites such as IGN and Nintendo Everything include pre order bonus guides for yet-to-be released games. Gamepreorders.com seems inconsistent with which games get articles. Perhaps preorder bonuses could be included in the Details section of a game page. Including preorder bonus as a check box for adding games to a collection would be excellent, but I acknowledge a bigger change