Nac, I don't know if you've done carpet removal before, but i just got my ass handed to me on a tile and carpet removal job. The 3 test spots i did came up real easy, but the rest sucked. I need to get a ride on stripper next time. I used an edgeco grinder and went through 5 discs at $175 each for 350 sf. I learned a good lesson on this job. I would compare the pricing to sub out shot blasting.