Where to sell unused shoes?

I had bunion surgery a few years ago and bought so many shoes based on the size of my foot that was operated on. Got the second foot done and realized I can't wear any of the shoes I bought. None of them have been worn other than to try them on. I kept them for a few years hoping the foot pain would subside but it has not so I am relegated to boring new balance sneakers for the rest of my life interspersed with summers in birkinstock sandals with special arch support. Anyway I bought about 60 pairs of shoes. None are from famous brands per se. They were anywhere from 50 to a few hundred when I first bought them. Is it possible to sell these somewhere (where??) or do I just need to give them to goodwill? I really hate wasting all that money on them. Also pretty heartbroken to never get to wear pretty shoes.