I haven't experienced the joy of a rotating cutting mat, yet.
After returning the first one I ordered on Amazon because it arrived bowed, I received an email from Sewing Parts Online with a 14" rotary mat for around $50. Also ordered digitally printed fabric panels 9" square. Like Spoonflower, they print after you order, whatever size you select. I ordered 9 squares for a project at $6.99/each! I will be sure to voice my opinion when they arrive!