I'm trying to sell a few things now, and what I surmise from the discussion above is that (a) summer is worse for selling and (b) people are being more cautious about discretionary spending because things are really volatile right now. (And for the foreseeable future, I'd guess.)
Of course, if inventory starts drying up in various places, used market will get hotter.
I'm prepared to wait a long while, but the difficulty for me is between whether I'm "just being patient" vs. "have things priced too high."