Keep an eye on craigslist for roofing. While I was in Denver, I picked up 9 squares of heritage for $40 a square. He had other leftovers as well, but I only needed the shingles at the time.
I thought you country folk all built pole barns?
Not quite in the budget yet. A 1200sq ft pole barn is going to run me somewhere in the neighborhood of $10k in materials alone, with no floor. I just need something to keep the mower and stuff in for now. 200sq ft is what I can do without involving the government (permit)
Pole barn is next year.
Foundation Building Materials, Pioneer Materials West, Front Range Lumber.
Many of the full service building supply outfits will carry steel framing and can put orders together ready for next day pick up.
My neighbor used steel for floor joists when they built their house. Worked very well.
Might give Deck Super Store a call, they are getting into steel joist materials. for decks.