That's an interesting idea. I'm coding Direct Store Delivery software that manages inventory through wireless handheld devices. The problem is that a lot of shipping is from vendor to store directly and the receivers are required to validate the shipment has the correct products, quantity, cost/deal invoice details and then work it out with the vendor delivery driver as needed. There are companies that strategically attempt to offload certain products that the store doesn't want at that point in time but will save the vendor $ if they can ship today vs. next week when different cost/deals take effect.