Me and my girlfriend had this problem when we combined two homes into one. I had a three bedroom house and she had a two bedroom house and we decided to move into the two bed house to save on costs..
My house had mostly built in wardrobes and was largely full of junk, some of it was ok ish, my sofa was really old whereas her sofa was a much better style and nicer looking etc..
We had duplicate plates, forks, pans, tables, chairs man… It was a nightmare. I started to try and shift some of it via ebay. I was renting my last place, but I couldn’t shift the stuff quickly enough. We took what we wanted from both homes, made the two bed house using up what we wanted from each and used the three bed as storage for a while whilst I tried to sell it all on..
It had dining room tables, old TV’s, sky boxes (yeah we had duplicates of everything) but sadly a lot of it was basically junk. You see, whilst we had a spare TV, it was a old 32” CRT, as we used the plasma TV’s in the living room and bedroom, we had a old VCR, an old Dreamcast games console.. I mean lol
I couldn’t shift it quick enough, the rent a month was £750, so I took out a storage container… This was costing me £40 a week, yet still ebay got just £50 for the three seat sofa lol
I ended up having a few car boot sales, it sold hardly any of it to be honest.. In the end, I got fed up with it all and skipped nearly all of it… It was costing me more to keep it and try to sell it on.. the hassle was a nightmare... Flogging stuff is ok if you're got time and space to store it for free.. I didn't have either.
Net result – less hassle, no unwanted junk and saved on storage costs. That’s the problem with moving.. You do realise how much junk you have you don’t really need anymore..