Harry Fleenor is the go-to guy for Rollei, BTW, Mark Hama here in Atlanta (well, across town from me, over in Smyrna) for Yashica. I'm sure others do a good job but they are the known experts.
Mark has CLAed Yashicas on eBay frequently with a six month warranty. They aren't inexpensive but are probably fair deals for a camera he has gone over.
The above comment is spot on. I've handed mine to several friends who, after moving it around just a couple of passes back and forth, exclaimed that the right/left reversal was impossible for them to deal with. These have all been either non-photographers or those who have shot only 35mm and digital, though. It's not the best for fast moving subjects, true, but otherwise I got used to it in pretty short order.