They're getting rare so they're starting to be sold for scalper prices everywhere. This is strange for 'old tech' - is there any chance this is to blame on Rockbox, since supported devices are so relatively few?
Anyway - it looks like the best deal at the moment is ebay or similar (though I've seen one DRASTICALLY underpriced in the "used electronics" cabinet at a random Game Stop - if you have time to really scour for a deal). The prices on ebay are .. doable .. if you really need a unit, and you plan to take care of it. I'm considering it just to have something as backup to my FuzeV2 since the click wheel won't last forever.