Your comments

You can already filter your collection down to the exact console.  

In your collection page.

Click on the "Filter/Sort" box.

Filter by "Category' to "video games"

Filter by "Console/Set" to whichever set you want to see.

The page will update to show only items for that console and the total value of the items you own in that console will be shown at the top of the page.

Here is an example page with only Gamecube games in my admin collection.

https://www.pricecharting.com/offers?status=collection&seller=dx2vp7qam7omfdwgu7jk6mw4f4&sort=starts&category=video-games&console=G3&condition-id=all

You can already do this on the site.  In the "Filter/Sort" box on every search result page, choose "Filter By Region" to whichever region you want to include.  That will exclude PAL and Japanese games if you filter to NTSC only.  That will be remembered on all future searches too so you only need to do it once.

This is already a feature.  

https://blog.pricecharting.com/2022/09/track-of-games-owned-by-console-filter.html


Add some items to your collection on the site.  Then visit the set page to see your collection progress.  You can even filter the results to exclude variants (like reverse holo) and see how many of those cards you own.

You can see the collection progress at the top of any of the pages like this:

https://www.pricecharting.com/console/pokemon-lost-origin

You can already search for anything in multiple sets.  A search like "Pikachu Pokemon" will bring up more than 200 cards from dozens of sets.

You can do that.  Here is an example with Charizard Reverse Holo as the search term.

https://www.pricecharting.com/search-products?type=prices&q=charizard+reverse+holo

The results are from all different sets.  

Let me know if I misunderstood the request.

Thanks for the feedback.  Prices on the marketplace are all in USD because you will receive payment in USD and the exact amount you get in your currency will depend on the exchange rate at the time.