I went by that shed we built on Christmas day and took a couple pictures. My buddy moved about 15 years ago and I don't know the new owners so I took pictures from the road.
It cost next to nothing to build this as we used almost all recycled materials. (We were lucky because we had contacts in different industry's.)
The 2x wood came from an airport. We got 2x16's that were used to make crates for airplane wings. We got that wood free and trucking was just a fluke. A buddy happened to be dropping off a new airplane part and saw all the wood and asked about it. They loaded it on to his empty transport trailer and he brought it home...
The steel was free... It is all top and bottom sheets from the manufacture. Another buddy used to deliver corrugated steel and kept the top sheets when he dropped anything off. (They were used to protect the sheets underneath and went to the dump back then...)
The railroad ties fro the floating foundation came from an old gravel pit. Loaded too.
I spray painted the whole thing when it was built.
SO all the that was purchased was nails, the things to make the trusses... (nail pad..?) re-bar to hold the ties together, windows, paint, man door, (There is a used 14' garage door on the back.) wiring and the floor boards. 2 layers of 1x12 barn board one layer each direction for strength.