I have found the most painless and the fairest way to do this is, after implementing
the most reasonable control methods possible, is to count the money. Simply compare your
purchases with your sales and if you have a loss of say 10% you raise your cost
and selling price by 10%. Review this monthly and normally you will find that the
price pretty well stabilizes after a short time. Remember though, this is not a substitute
for some type of control, this is just to keep you and your dealer "whole" selling
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