Allow sorting by potential profit (value - cost)

I would really love to see this as well to determine what cards i've made potential money on and can sell for a profit. I would like to see this as a column (sortable) on all pages when browsing)

Thanks for the idea.  I'll see how popular this is with users.

For now, you can do analysis like this with the "Export Collection" feature.  You export to a spreadsheet and you can calculate different values and sort/filter them as you need.

https://www.pricecharting.com/export-collection