Well, DTS, I'm not a great fan of the 'bay, but you could go there. If I were you though, I'd go to all the SM dealers and repair shops in the area and look at their inventory. They take machines in on trade-in, so someone may have the one you're looking for. I'd also watch Craigslist. Your local quilting guild might give you some leads too.
I'm so sorry Sandy stole your machine and wish you good luck in your search for a new one.