Glenn is right! Average shingle cost L&M is around 200-250 a square. We install standing seam all day long for 350-450. Not twice the price, but 4 times the life. You will shingle 4 times at an average of 5000 dollars per job, or pay 9000 for steel and 25 years from now 1200 for a coat of paint (if needed). The new paint coatings and CoolR steel is amazing even the people at BASF. And steel reflects heat away from the attic and is 70% recycled material, where your shingles emit gases and go straight to a landfill, only after they have cooked your attic by absorbing heat.
Not giving a sales pitch just stating facts that may help you take that extra step. I dont know your financials, but any reputable company should work with your budget and/or offer financing of some kind.