You crack me up, always so literal. Read it again. I was being flippant, you know sarcastic, a deliberate simplification to illustrate a point? Jez, there is no need for the tone.
But my point exactly, the SKU is on the consignment note, there is very little effort to scanning a bar code and allocating stock. Sorting the correct part numbers is no effort, no more than any two product. Lol, I've actually installed and designed dynamic POS/ISC systems. I have the slightest inkling on how they work thank you. I still think if a large firm want to charge a premium for a guaranteed anything then people will pay.