I've got an aging but functional FSC-11 Fontaine stone grinder and sander for sale, cheap! If you've always dreamed of machine-tuning your own skis, here's your chance. This machine has a 127mm stone and 6" belt. The easy part is it's only $250, the hard part is getting it to your house. It's on a pallet jack right now, so if you've got the right trailer or truck and some big friends, you're on your way. Search "stone grinder" on Craiglist Seattle.
Do be aware that if you get this thing, you'll wind up as neighborhood tune-central. You'll have more friends and beer, but less time and electricity.