LOZO’s Grocery Unit Price Comparison Calculator March 24, 2018 admin Use this calculator to compare the unit price of two items. You can include a coupon to see which is the better deal, or leave that blank to compare base cost of the items. Don’t miss our Grocery Coupon Bundler for all printable grocery coupons in one place! And sign up here to get coupons emailed to you that match your shopping list. Item 1: $ Units: Item 2: $ Units: Coupon Discount: $ Compare Unit Prices After Coupon A LOZO expert created this resource.