I bought mine M3 (my second, the first one I bought on ebay for much more) on a flee market early in the morning here in my hometown in Germany for only 5 Euro!
It was hidden in a box with lot of other stuff. The sign on the box was: "Everything in here for 5 Euro"
I saw the Everready case of the Leica and felt that something was in there. Before the seller considered what she has there, I asked her, if I could give her 5 Euros and could take something out of the box. She said yes, of course.
So I bought it and took the case with me. A few meters far away, I opened it and there was a Leica M3 with 50mm Summicron and Leica-Meter MR inside.
It could have been a M2 as well, didnt know.
Huuuh, that was a thrill!!!🙄