The only place I ever sold domains and websites was digital point market place forum. Back in the days when people actually were interested, now...not so much.
i am using Flippa and i would say it is the best marketplace website to sell your domains and it actually sells really fast and for a good price. good luck with selling domains.
If they truly are premium then Sedo will probably get you the most overall exposure, but that comes at a price. I'd suggest posting them at multiple places, there is a forum here for domains, other hosting related forums have places to list them as well, I used to use https://www.dnforum.com/ to shop for domains, they seem to still be active, though I haven't been there actively in a long time.
You can price your names out by searching for sales of similar names at https://namebio.com which does seem to be accurate, I found domains listed in there correctly that I sold years ago.
Consider SEDO as it one of the best global domain maketplace. It connects bot buyers and sellers. Other best options are go daddy auctions and flippa domain.
I've sold a lot of domains on Sedo from 500 USD to upto 5000 EURO per domain, but it was a long time ago, i guess 8-9 years ago, not much into domaining anymore but SEDO was good place to sell domains at least at that time