Yes VERY pricey... unfortunately, Leica prices are becoming insanely expensive (I remember price increases across the board 3x already).
I HIGHLY recommend the Epson R-D1. Mine is a secondary body and I absolute love its mesh of old and new. More details on what I think about the camera is in this thread:
http://thephotoforum.com/forum/showthread.php?t=93954
Since purchasing the camera just a couple months shy of a year ago now, I can say it is still a champ and I get a lot of enjoyment out of the camera. It is discontinued therefore there are obvious issues that go along. First, finding one for sale is might be difficult. It was not a high volume camera. Check
www.rangefinderforum.com in their classifieds section (you need to register). Last time I checked, there were 2 for sale there. Second, is finding service if you run into the problems. The R-D1 was treated more as a pet project of one of Epson's Executives and initial sales really kicked them in the rear. As much as the D-RF community has pushed them to move forward to the R-D2, it seems Epson has not shown any interest. As such, finding service for an R-D1 also is a pain. I have seen one thread of a 100% repair and quick turnaround via
http://www.stevecamera.com/. For the most part the Epson is reliable but as with most products a need for repair does crop up (and you hear about it quickly on the internet).
As for lenses, Leica is the obvious choice albeit expensive. A good alternative would be Voigtlander lenses (
www.cameraquest.com). Very affordable. If you want to carry a film rangefinder as a backup, I highly recommend an M-mount Voigtlander Bessa. Essentially the same handling as the R-D1 (the R-D1 body is based on the Voigtlander rangefinder).
A great package for street to look into, R-D1 w/ 28-35-50 Tri-elmar and Voigtlander 21mm color-skopar (you estimate with two eyes open).
mods: if posting a cross link to another forum is a no-no please correct.