5-Sheet 3M Multi-Purpose Abrasive Aluminum Oxide Sandpaper (Assorted Grit, 9x11") $2.70

Amazon has 5-Sheet 9x11" 3M Multi-Purpose Abrasive Aluminum Oxide Sandpaper (Assorted Grit 100-150-220, 9" x 11", 9005NA) on sale for $2.69. Shipping is free w/ Prime or on $35+ orders. About this product: Use it by hand, on a sanding block, or cut it to size for a power tool sander.