How to get rid of old pieces?

I was an early dynavaper, got in on the OG and collected quite a few pieces since then.

Completely lost interest and figure it’s about time to get rid of them. Used to be possible on Reddit, but seems like that’s changed.

Where would the best place be to list them? Please don’t bother with the DM’s, I got some nice pieces that I would like to sell to the highest bidders.