lucy24 - 11:06 pm on Nov 16, 2011 (gmt 0)

Question that may be worth pondering: What proportion of buyers realize that "free shipping" doesn't mean "the merchant eats it", it means "the cost of shipping is spread out among the cost of all products". So any given item may cost either more or less than it would if you charged separately for shipping.

Beware of the customer sneaky enough to do the calculation separately each time they buy something ;)