Thumb Score: +25 Amazon.com has DeWALT DW4725 High Performance 4-1/2" Dry Cutting Diamond Masonry Saw Blade on sale for $4.99. Shipping is free. Thanks Corwin Deal Editor's Notes & Price Research: [LIST][*]Don't have Amazon Prime? Students can get a free 6-Month Amazon Prime trial with free 2-day shipping, unlimited video streaming & more.