Please, check before posting.
M2 was listed as "distance meter dejustiert". In English it means RF is toasted. Somebody seems already purchased it, I hope, this person will not face 500 Euro bill to have RF unit replaced.
Leica is the rangefinder camera and if rangefinder is not working correct, it is cheating to list or describe it as working.
Non M2, not M5 were in ugly condition (you have to see my serviced multiple times due to use M4-2 for it), they are both in non-working condition. M5 has damaged advance lever and who knows where to find it now and at the price which is not 300 Euro.
I've been buying Leica and RF gear for sometime now. If it is listed cheap, here is the reason. But many people still get fooled.
If old (and especially Leitz) lens is listed bellow market average price it is often not for cleaning, but has fungus damage and or separation.
Best regards, Ko.