The price you paid is shown on the collection summary page if your screen is wide enough.  In order to conserve screen space smaller screens don't show that.  If you look at your collection in landscape mode or on a desktop PC, you should see that field.

The value in your collection should change when you update what is included with the item.  If you change something from loose to CIB, the value will update.  It doesn't update instantly on the collection page but next time you load the collection page or the item detail page you will see the updated values.

The value of a collection changes overtime as the value of an item changes.  We update every item in a collection once per month plus multiple times during the month if the value of an item in that collection changed in a substantial way (up or down).

Are you not seeing these updates?

Thanks for reporting this with great documentation.  We have this report already mentioned by some other users.  I'm going to close this to keep the votes consolidated in one place to help us prioritize.

https://pricecharting.userecho.com/communities/1/topics/652-cost-basis-support-for-other-currencies

Please go there and vote for that too.

I've added the missing PAL SNES version now.

https://www.pricecharting.com/game/pal-super-nintendo/mighty-morphin-power-rangers-the-movie

I've added this now.

https://www.pricecharting.com/game/pal-nintendo-ds/oktoberfest-the-official-game

Thanks for the email. 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

If you ever do see this, please email me directly, jj@vgpc.com, and I'll look into them and correct them.

Users with contributor privileges can add eBay sales to the site.

https://www.pricecharting.com/ebay/add-new-listings

They can't choose the condition for the sale though.  I'll make a note about that request.  Feel free to add a feature request for that if you think it is worth it on it's own after trying out the existing tool.

Good suggestion.  We allow multiple reports, but we don't allow the sale to show up for review again because some legitimate sales are reported over and over again and fill up the review queue.  

I definitely want to fix these sales when possible though.  I've gone through a bunch of the Mortal Kombat Komplete edition sales and reclassified them.  If you know of more examples, please let me know so I can do the same.  But I probably can't do the solution presented in your opening request.

I've added all of these now.  Sorry it took a few days.