I don't do commercial shows but I think a lot depends on the size of the venue, the complexity of the lasers (beams or graphics or both), multiple projectors. If you are using graphics, are you using from a stock library or are you creating your own artwork? There is a lot to it and unfortunately, I know some of the pros on here are dealing with the fly-by-night guys using non-varianced cheap chinese junk and stealing $2000+ gigs by charging cheap rates. Good luck in your endeavours! Lasers really are the bees knees in lighting!
If you're the smartest person in the room, then you're in the wrong room.