Anyone have experience with Wolcott Omnisphere's?

I have recently inherited some Wolcott Omnisphere speakers (MDH-2B). I remember them having great sound, but don't know much else about them. While they carry sentimental value for me, they are just too big for my apartment. I am thinking about selling them, but don't know: (1) what a reasonable asking price might be? (2) Where is the best place to sell them?

So far the most info I can find on them is from the company website, but it looks pretty out of date: