>>4339615canonets are all nice and can be had cheap if you trawl the listings. Only the 17giii seems to get hard memed, the rest of the lineup is more reasonable. I have a ql17 (gii i think) that i got for 20$, but i did take a risk on a "for parts" model. the description said it shot the shutter, lever wound, knobs and switches all worrked, just didn't have a new battery and couldnt test it with film. thing works absolutely fine, even still has a live battery. picrel snapshit from it.
Some anons on here at one point had also mentioned the kodak signet 35 as a cheap underrated RF and i've got one on the way to try out. There's lots listed for like 20 bucks.