(SOLD OUT) In-stock alert: Ricoh GXR A12 mount (Leica M-mount) for $650
As of a Nov-7-2011 check, this has sold-out! Original post after the jump...
The Ricoh GXR A12 Leica M-mount mount-sensor block is now in-stock and shipping for $650 at Samy's Camera. It looks like it is also in-stock at Amazon but their product listing is not very detailed (by induction it is the M-mount, but it would be nice if the product listings mentioned it). Please note this is a sensor + mount block.
In order to take pictures you need two more items:
+ a camera body - the GXR body is the only one available at the moment ($350
in-stock at Samy's)
+ an M-mount compatible lens (check the various Ricoh and Leica forums for more)
Another way to get the GXR body is to get a GXR bundle. For example, the GXR P10 kit comes with the GXR body and the P10 sensor+lens module for $480 (eg B&H Photo, Amazon, Adorama). The P10 is a typical 1/2.3" 28-300mm equivalent compact-zoom (sensor+lens block) and goes for $235+ on its own.