You're trying to look for duplicates in your listings? You have two choices I know of:
Long way: Go to your Active Listings page: https://www.ebay.com/sh/lst/active and click on Title to sort by title, then scroll through for any duplicates.
Quick way: Use a third-party tool to scan for duplicates. The one I use is here: https://www.isdntek.com/ebaytools/DuplicateListings.htm I hope it's not a problem to post it here, but I've seen it posted before so I think it's ok. It works pretty quickly and it doesn't access your account, you just give it your username for it to scan by, and it's found dupes for us before.
