I'm currently getting estimates for a full re-roofing of my home in Las Vegas. It's about 1800 sq feet, and currently has 3 tab. It's an old roof, about 20 years or more old. I'm trying to get as low a bid as possible. The two guys who have bid so far have said it has to be architectural shingles because 3 tab aren't sold anymore. They said that even if I wanted 3 tab, they can't get it, as Lowes/Home Depot no longer carry it. Is this true? I'm trying to get the price down any way I can and if 3 tab cost less, I'd do that. They also have refused to do any spot repairs (they want a big job), The two bids I've gotten so far are 13K and 11K. If I can't get it under 10K, I will do spot repairs (not myself, will hire it done), but just wanted to find out if it's true that 3 tab are literally not sold anymore? Thanks for the info!