I've only ever owned one Jupiter lens - the Jupiter 21M 200mm. I loved that lens and used it frequently during the 90s with my Zenit gear. Sadly, it was lost to a basement flood years ago, and was beyond repair by the time I recovered it (massive fungus damage).

As for the Helios 40, you may not beleive it but, I bought mine used at Izmaylovsky rynok for ~$80 USD in 1994 (or 1993?). I don't think I could afford to buy a replacement for it these days given how popular it has become. It still has some slight fungus damage from the same basement flood, but still produces wonderful photos.