Hmmm. $8500 actually isn't bad for a Lahti. Of course you gotta bed permission from the gummint to own a "destructive device" and all, not to mention find ammo for it. I guess you could reload, but I think finding dies would be a bitch!
While we're wishing, I'd like a Solothurn 20mm.
Swiss craftsmanship at its finest, baby!