on the other hand, you can challange it's stupid for the film bodies as well.
M3 is the most classic body ever. it goes for about 5k for an okay condition body, 8k for a very good condition.
M6 is the second most common body. it has nothing in addition but metering compared to m3 (and of course other cosmetic stuff..). it goes for about 10k.
M7 is the latest film body. it's basically M6 + Av exposure (aperture priority) it's about 25k.
the extra 20k u pay for an M7 goes to metering and Av priority mode. is it worth it?
logically : PROBABLY NOT.
emotionally : every damn penny.
it's leica