i think the same could be said of the cop 357 derrenger.I have one of these too. I bought it a long time ago and do not remember the price. As a piece of mechanical ingenuity, it is unique. As a weapon...well, as woolleyworm says, they are a novelty.
I am surprised they ever made it into production. Whoever provided the financial backing either invented the thing or knew next to nothing about pistols. The Lorcin type pistols were easier and cheaper to make, and if Lorcin had taken some care in making them, more viable as weapons.