I just built myself a flexi-rack this past weekend, using mdf, and I would like to cover it with roll-on bedliner. The reason I want the bedliner material for it is because the rack will be my TVstand/entertainment center at college. I need the paint/coating to be VERY durable. So where can I buy this stuff? And is it expensive? I read somewhere that it's at NAPA yet it is $100. If it's that price everywhere, I'll just come up with a different alternative.