I love Economic, Marketing, it is a social science concerned with the factors that determine the production, distribution, and consumption of goods and services.
SO if you purchase is $69.98 and the average product price of this is $37.00 low end to $50.00 high end as average product price and you have a sale buy 1 get on free on you're $69.98 the total saving in 11 cents low end $30.02 high end how is that a sale? It would be a sale if you purchase you're product on a high end then I can see a saving.