For you folks looking for micromesh sheets, this place sells individual 6" x 3" pieces without the bothersome foam backing. Plus, you can buy individual sheets, unlike a lot of vendors that only sell the kits. I find myself only using the 4000,6000,8000 and 12000 grit sheets. Shipping/handling rates are reasonable as well.
http://www.amazon.com/Rockler-Micro-Mesh-12-000/dp/B001F7LVNC/ref=sr_1_12?ie=UTF8&qid=1324596394&sr=8-12
http://www.amazon.com/Rockler-Micro-Mesh-12-000/dp/B001F7LVNC/ref=sr_1_12?ie=UTF8&qid=1324596394&sr=8-12