you can always find items that are useless to you, or just not very useful.
Funny story from one campaign,
DM made 4 custom magic items for our party of 4, from a big boss fight and a treasure hoard.
we identify those items, and going straight to Waterdeep, we decided to sell them all.
I saw guys will for d&d drain from him in real time as we sold custom made items that he spent time designing them for bunch of +1 stock weapons and armors and some cheap uncommon/common items. It was sad and hilarious at the same time.