I used to have a Skeeball lightning. It was well used. I sold it years ago for $1200 I think.
Their huge games. The ramp is 8’ long and the backbox in another 5 feet, add in room for the player to stand and you’ll need at least 15’ for room. Newer ones are more compact but expect it to take up at minimum 10’.
We really liked it while I had it. Kids loved it. It might have even been played more then the pins.
Their really loud also, imagine a bowling alley in the basement.