I've been playing around as well. I just purchased a new house and it has a detached 21.5 x 15.5 garage that doesn't have electricity. I been using it to figure out the lighting, wall outlets and the planning of my work space.
It is amazing how much you can do with the program.
At $2.55 a square foot, I would think you could almost get some sort of interlocking tile, as opposed to the peal and stick.
Sears is selling interlocking tiles for $110.00 for 40 square feet. That comes out to be right around $2.75 a square foot.