Can you give us a rough idea of where you are located? That makes a difference in how people could answer "any market for..."
If you are interested in getting a working battery:
I maintain three old G3 Wallstreet PowerBooks for a friend and we've bought two WS batteries from this outfit, and they have given excellent service, especially considering my friend doesn't run on battery as much as he should to keep the battery exercised and healthy. I think both batteries are over five years old and going strong