Well obviously a prerequesite to this procedure would be to verify the ISBNs are correct!
There is a plugin that extracts the ISBNs from ebooks. The scenario you are describing sounds like you might have a couple of wrong numbers there. As the plugin was able to identify/verify a bit more than 70% of the ebooks in my library i am quite confident that an automated approach would be useful.
Also i tested the find duplicates plugin yesterday and in the first 50 Books the results were on point. But i don't feel like comparing all of the books by hand. That is why i made this post.
So is there a way to compare the results of the plugin?
As far as i understand the plugin iterates through the whole library and makes a list of ISBNs. If the most recent one was already on the list, it gets marked as a duplicate, if it was not, it is put on the list. So far so simple, i just struggle to see a way to compare filesizes in this process.
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