“a fixed allowance is offered; irrespective of the nature of the item traded in; for any item of a particular class without regard to make, age, model or condition; for any item of a particular class or make irrespective of age, model or condition; provided that no attempt is made to value the traded-in goods and there is no reason for the goods to be accepted other than for trade promotion (which would not apply where prior arrangements have been made for the traded-in goods to be reconditioned or sold)”
“We do not think this [i.e. the distinction between fixed discounts and discounts based on individual contracts] is relevant and in fact strengthens our case. A higher value is generally attached to the items being “part exchanged” on larger contracts precisely because the contract is larger. There is no relationship between the value at trade-in for the goods and the value (if any) of the goods themselves. This is in line with normal commercial practice of discounting larger contracts by a larger amount.”