I've seen a few pop up here, but I was always a week or two late. Being a Supporting Member, I don't know if you can set up some kind of alert for an RC4 in the classifieds?Same exact situation for me but I haven't found a good deal used yet. Still looking, maybe someday
I found mine on Kijiji (Canadian for CL). The guy had the whole setup, but was willing to sell the the foot switch separate. It was the the fourth full system I'd found (after an RH750, a Blacksmith, another RH450), but this was he first guy willing to sell it separate.