I used to get $3 a square foot for bolt ups and up to $6 a square foot for weld ups..
Every building is so different Shad.. Do they want insulation, do they want weather stripping between each sheet, do they want seal foam on the ridge cap and eves, what is the eve height, Do they want the wall tin put on upside down for a different look..
Every building has its dirty little secret hiding that will suck up your money if you bid it wrong..!!
I made good money building them but I just got sick of the headache..