Benitoh - I would run to the shop for this deal!
If there is even remotely a possibility, to get this even further discounted (the dealer might find a original battery in some forgotten corner ;-)), this would be a very solid deal.
Don't let others fool you - yes, second hand M8 are available not soo much more expensive, and yes, the R-D1 is an old camera, but still in 2011, it is a wonderful and very, very capable camera, to shoot - especially for B&W.
I still have mine around, although not using it anymore.
This comment comes from a M8.2 user, who recently has added a M9 as well.
These two digital Leicas do not change the R-D1's abilities the slightest!
It has mentioned, that the R-D1 holds it's own in ISO1600 against the digital Leicas.
I have been of that opinion myself for all the time, I used the R-D1 (mostly @ ISO1600 btw ;-) ) and even missed the great low light performance, when using mostly the M8.2 and pushed film.
Today, I have to say, that the M9 has broken that very barrier, the R-D1 always has been ruled - the M9 indeed has an edge in high ISO shots, even over the very, very strong R-D1. M9 files even push very nicely (not tested yet, if crazy speeds as ISO6400 or 12800 look as usable, as the R-D1 files though).
R-D1 @ISO1600:
M9 @ISO1600:
I would not sell my R-D1 for a low price as 1.100 USD - it's just too good, to be sold that low ;-) So anybody, who sees a deal as good at 1.100 USD for a nice looking, fully functional R-D1 should jump for it.
The 650 USD mentioned above indeed is a one in a kind too good deal - congratulations!