You hit it the ad at the right time as well.
They had it listed for $800 a little while ago which is too much and why no one bought it initially and then just cut the price in half.
The added parts is a bonus and wasn't in the ad.
Congrats man, look rad.

Thats really bizarre.
I think it's a cool as hell pickup by the way, congratulations.
I actively look for EM shooting games and just don't see them pop that often (at least in Arizona).
I have 7 of them, plus a Shoot the Bear and all but two of them I had to bring in from out of state.
I kind of feel like these things are sleepers in the hobby.
Even the ones that are "common" are really not all that common and elusive to find.