I've only been buying so far.

My son has sold a few things on Ebay tho.

I have major trepidations about selling. But then I was very
nervous about buying for a long time. Maybe I will thaw out a bit. I sort of HAD to buy at Ebay because the cookware I wanted is no longer made. Then I discovered the crystal/mineral sellers! HAHAHAHAHA I found all my New Visions cookware, but it took 2 months to get it. There were even some sellers close to me, so I arranged to pick them up and save postage--Sending GLASS as you know, is a worry!
Those sellers were very happy to meet me in a parking lot instead!

I just got two nature books for vacation, and a pair of crocs.

But I always check out what I am planning on buying, on Google too. Sometimes it is less money not using Ebay!

I've been burned by a small number of sellers...not for big bucks, but it was unpleasant. Each was a tough lesson!