Approximately $15 per square foot for me. If/When I add DCC probably another $3 or so.
Scenery - lots of natural materials, art supplies in bulk, etc. Rolling stock - train show castoffs modified with wheels, couplers, weights etc. Locos - mid priced, some P2k. didn't go overboard on the numbers of locos, just what I needed (8, could use another switcher). Structures - mix of updated stuff from old layouts, new and scratch.
The mind is like a parachute. It works better when it's open. www.stremy.net
I'm curious as to what the cost per foot (avg) is for some of these awesome layouts posted here. I'm only talking what came out of the wallet and not the time involved. This would include everything, from the benchwork to the last pop can in the diner. (no room additions, carpet, etc). Did you purchase everything or do a lot of scratch building and obtaining readily available materials (dirt, crushed gravel, twigs)? I'm just trying to get an idea of where I stand.