Your comments

You can contact me via email at sales@vgpc.com to discuss any other commercial or business development ideas.

Very interesting ideas.  I can definitely see the value in the first part when buying lots and being able to change the condition for each item to get a more accurate value for it and being able to avoid buying duplicates.

Your system sounds really good for your use case.  Each user is slightly different though so I'm not sure if that kind of system would apply to every user.  Very creative solution for you though and I'll think about if there are ways we could apply things like it in the future.

Yes please.  A sheet with one column will work:

product-name

If you have the release date, genre, or publisher adding columns for those would be helpful too.  You can email sales@vgpc.com with the file.  Thank you

Please give me a link to your collection on the site and I'll look into this and fix it for you.

These cards have all been added now.  They will take about 24 hours to show up on the site.

https://www.pricecharting.com/console/amiibo-cards