Please report any incorrect sales that are not actually CIB so we can remove them.  Our algorithm is not an average of all sales because the sales happen over a period of time.  More recent sales are more accurate for the current value then a sale that happened 6+ months ago for example.  We also have methods in place to remove outlier datapoints as well.  You can read more about it here:

https://www.pricecharting.com/page/methodology

We generally don't track homebrew games.  We added Pier Solar and Wukong because of the value of them, but most homebrew games are not very valuable. 

I've added the travel bag now, it is Sega brand.  I cannot add the bat controller because it is a 3rd party item.  We don’t track 3rd party controllers or accessories. There are tons of different 3rd party controllers/accessories and most are not very valuable.

I hope you can understand. Thank you

Please email the exact items missing (name and console) to sales@vgpc.com

If you have accessories or hardware missing, please give me a link to them online (photo or info) so I can make sure I'm adding the correct item.

Please email me with anything we are missing.  I definitely want to add all games and first party hardware to the site.  We don't track 3rd party stuff though.  sales@vgpc.com is the best email.

I've added this now:

https://www.pricecharting.com/game/pal-sega-master-system/hang-on-sega-card

You can do this now.  Click on the 'in collection' orange button on most pages on the site and then click 'add another copy' button on that next page.

Thanks.  I'll see how popular this is with users.  We have a autocomplete drop down for the most common search terms, but it isn't based on a user's particular search history.

Do you often search for the same thing?

Like this:

https://consolepassion.co.uk/products/sega-master-system/games/hang-card

That should be this game:

https://www.pricecharting.com/game/pal-sega-master-system/hang-on