They are a god send, especially when making long cuts and usually wind up alot neater than using Snips, theyu do come at a price though i think a set of electric makita ones would set you back around 600 bucks although im not too sure about they pneumatic ones I think they may be considerably cheap. We prodominently use battery powered ones on site but the price for those escalates again.
they will usualy cut upto about 1.2mm stainles steel and as long as you have a steady hand will do a very nice job
