How large is your collection?
I recently created an Excel spreadsheet to list/organize my entire graded card collection (have no idea what to do about ungraded yet, if anything at all). Took forever, because I didn't realize I had so much plastic, but now have the option to (manually) enter/amend 'estimated values' to keep a running tally.
After you find the right method to assess the value of your cards, it might be a workable option for you if the size of your collection doesn't dissuade you from doing so.
Good luck!!
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