I got my stuff from a local insulation supply company (in Sacramento). My cost for 2" 703 equivalent was $1.20/ft^2. I also got 2" 8# mineral whool from the same place for $0.80/ft^2. I stacked the mineral whool 3 panels deep across the vertical corners (floor to ceiling) and 2 panels deep behind the listening position (parallel to the rear wall and a foot out into the room). The 703 equivalent hasn't been installed yet, but I'll put panels at the first reflection points behind the speakers, on the side walls and on the ceiling. They will be spaced 2" from the sheetrock. I'll also put a ring of 2" 703 equivalent (cut to 1' wide) around the room at the wall/ceiling interface. Those panels will have the FRK facing. The room will be heavily treated, but before that the only stuff in the room was my HT equipment and one couch. It needed help badly! I also got cloth from a local fabric company that was extremely breathable. I don't remember the name of the fabric off hand, but I could easily breath through it when I put it up to my mouth.