Also, when you buy stuff with a rebate at OM, the print out a seperate "rebate receipt" that you would use to send in for rebates that require the original receipt. An OM CSR told me that when you buy online you don't get those little receipts and therefore the manufactures must accept a copy of the packing slip. BTW - if you make a color copy of the packing slip, it looks really close to the original.