Lazor Hair removal

Ive tried everything in the book to not have razor bumps/irritation after shaving and it just doesn't work for me. I was thinking about doing laser hair removal or trying waxing? I don't have that High of a pain threshold so I'm kinda nervous about that part. Does anybody know the typical cost for a session of laser hair removal? Also tips/experiences/advice about if laser hair removal is worth it? How old do you have to be? Thanks!!