Probably in the $600ish per square range... give or take depending on variables such as... do you have a CNC brake and sheer or buy preformed or slitter and hand brake, telehandler with spreader or carry each panel up one at a time, proper staging or tied off, power shears and nibblers or tin snips... it can be cave-manned but having the right equipment will make make life so much easier... also the biggies.
How big of a job is it?
New or re-roof?
Can it be preflashed or do you have to do so much and stop and wait for stucco or other wall finish and paint?