>>3532601Do you need the lightmeter? If yes, the M6 is your only fully mechanical option. Otherwise, consider one of the earlier models. I don't know how deep you got into the topic, but apart from the lightmeter, you can basically choose your M based on the widest lens you want to shoot without an external finder.
I got this M2 for 400eur, but sold it after realizing it doesn't offer anything over my M4-P. Good deals have become rarer and you have to be patient. Otherwise expect to pay about 1200-1400eur for an M6.