Amazon has the 30-Count Weiman Granite & Stone Cleaner and Polish Wipes for $4.22 - $1.08 off coupon (check "Apply Coupon") = $3.14 with free shipping on $25+ or with Prime (extra 5% off with 5 items S&S order). 

• Walmart has the 16oz Weiman Granite & Stone Daily Clean Shine with Disinfectant for $4.64