I have leftover 4 metal insulated (5") roof panels and 2 insulated (4") wall panels from a project. Plus other assorted panel pieces.
The roof panels are 25' long x 3.5' wide, x 5" thick. $435 each (appx $5/square foot)
The wall panels are 16' long x 3.5' wide x 4" thick. $280 each (appx $5/square foot)
These panels originally cost about $20/square foot. I have a number of cut sections also that you can have for just $3/square foot.
Note the big ones are 25' long, so you would need about a 22' long flatbed truck or trailer to pick them up.