Being able to prioritize which games, systems, accessories to acquire first based on desirability would greatly improve efficiency of purchasing efforts.

The report functionality doesn’t work for reporting Heritage sales. I’ve found multiple instances were Heritage sales were incorrectly categorized, under the wrong game variant, etc. with no way of reporting it.

When a user enters a eBay sale, there should either be an option to input the condition or when the data is scraped the condition from the listing should be utilized. This can be utilized for further analysis or even deciphering how one’s own game compares.

Sort a collection page by issue number or card number.  This would be similar to sort option available on search and browse set pages.

Watara supervision was a failed gameboy competitor with over 60 games, three hardware revisions and released in multiple regions, including US, germany, UK, and some asian countries. It is currently not possible to add either the system nor the games properly.

Adding half grade (7.5,8.5,9.5, etc.) would be awesome in understanding the price differences between a half and full grade. Seeing a lot of 8.5 grades come back from CGC and the pricing compared to the full grade below and above is vastly different between cards.

Having the ability to filter cards based on Ungraded price vs PSA 10 price would help those of us looking to buy raw cards on eBay that appear to be in mint condition (at least from the lousy potato phone pics) in hopes of getting those cards graded a PSA 10 for maximum profit or to hold for futures. There are several Pokémon cards that can be had Ungraded for under $15 and in a PSA 10 they go for $500+ depending on the card. Having the ability to see what cards could potentially 20x or 50x in value from their Ungraded price would be a rather unique feature.

Please add Japanese Pokemon cards to the site.

You have a filter for Japanese Region option but there are no Japanese Pokemon cards on the site

When clicking on report pop up an option to select reason for report i.e. CIB when currently associated to loose. This would aid reviewing process.