Dunno what the ammo is worth these days. Dunno if anyone is making it. I do know that nobody was, for quite a while. There was some talk in the magazines, about someone doing a run. It won't be cheap.
Perform? About 1100 fps with a 40 grain bullet. How well did it work? Well enough, given that it was fired by a blast of compressed air generated by a spring piston airgun style unit that had to be cocked for each shot.
They were a flop because they cost as much as a regular 22, around $40, but had to be cocked like an airgun for each shot, and you could only use Daisy ammo, instead of anyones brand of 22 shells. They were also cheesy and cheaply built, except for the presentation models (around $120+) which were reasonably well built and really expensive.
Why? Got a deal lined up and wondering how to feed it?
Save your money.
They are collectible, at least to a small extent, but they are not worth owning as a shooter.
Original ammo is worth something to the cartridge collectors.
Cheers
Trev