The building contractor head cheese (not the general) for the "big job" asked me how much per sq ft we charge, I gave him the "about $2.5 to $3" answer, with disclaimers, and he said:
"I know a crew who does it for $1 per sq ft., and they'll be done in three days."
"I said: I'd like to know how, I can barely buy materials for that!"
-Virgil Residential/Commercial Inspector 5 Star Inspections Member IAEI