Do you want look and feel of a III series Leica or just a LTM mount?
I have a IIIf I'll sell cheap. It needs a $200 CLA but then itll be good for decades.
I also have a Voigtlander Bessa R. More like an M body but LTM, and has a meter and beautiful rangefinder.
I have an M3 too. But, that would cost quote a bit more than either of the other two.
You could look around for a Zorki. I have a I, which looks just like a II series Leica but feels nothing like it. Its reliable but lacks any of the smoothness and refinement of a Leica. I wont sell it, but after shooting a Leica you'll never want to touch one of the cheap clones again.