I charged the customer $4,000.00. I have about $2,600. Maybe a tad more in material. This shed is built like a house though. Everything is on 16" centers and they roof and ceiling joists are framed with 2x6'S. I also put a 25 year roof on it. If these people replace the roof in 25 years this shed will last the rest of their life for sure. This shed is also completely maintenance free. It has vinyl siding along with aluminum sofit and fascia. They will never have to paint anything on this shed ever. The shed you bought are the studs and roof framing on 24" centers? Also did they use trusses? You got a good deal seeing as I have more in material on this shed than you do having it delivered and set up. Dale