Wow. That's a might stiff on the 'ol wallet, methinks.
I think I'd rather have an M1919 or something for that amount of coin.
I'm surprised nobody has made a more affordable, possibly simplified Gatling for the civilian market that uses a crank like the original Gatling.
AFAIK they are not classified as a machine gun since the crank acts as the "trigger" or something like that.
I can imagine a modernized variant being a real hit in 5.56 or 7.62x39mm, even .308 etc.