Musicmagpie and sites like it are quite good at sorting wheat from chaff, I ended up dropping a load of stuff into a charity bin, and anything they thought was worth more than a quid or so I went over to ebay, most stuff I ended up selling on there for a lot more. Everything that didn’t sell on ebay or had a piddly value, I slung on musicmagpie, it’s not a lot of money but it’s better than nothing
Oh, and I gave some interesting but worthless stuff to a used music shop I like, at least there’s a chance someone else picks it up. I thought it might be weird but apparently it happens a lot with music.