What are some construction costs per square foot?

The following are some actual construction costs per square foot that people paid during their metal building projects:

What they were looking for: "I am unsure of the size of metal building I need. I would like it to be tall enough to store a motorhome and wide enough to fit a 2 car garage door in addition to the RV garage door. We would love to have optional exterior features if possible, depending on the construction costs per sq ft."
Price paid: "Under $30,000 for complete installation of a 1,581 sq ft garage, two of the companies had quotes for the building in the $20,000's and this did not include any installation."

-Buyer from Oak Hills, CA

What they were looking for: "Classic car storage building, 14 feet tall for lift."
Price paid: "It cost me $14 per sq ft with complete construction - Survey, permits, concrete slab, piers, footings, steel beams wrapped in metal, 14' side walls, insulation, labor and materials."

-Buyer from Forney, TX

What they were looking for: "Metal building to use as a home, possible front porch cover and separate metal carport."
Price paid: "I purchased a 40x60x14 metal building for $9,483. All construction will be done by myself and 2 friends, which saves about 8-10 thousand dollars, as well as the foundation construction which cost $3.85 per sq. foot. By doing it myself I was able to save $6,300. All plumbing and electrical will be done by myself and friends as well as the h/ac for under $2,400. Entire cost of building and finished inside with all amenities come to $19,771. House will appraise for $130,000. "

-Buyer from Itasca, TX