Graham is a marketing manager who is trying to boost sales of a line of colored pens that haven't been selling well, normally priced at $10 for a set of 10 pens. Graham's best-selling product line is blank journals with vegan "leather" covers. To move the slow-selling pens, he decides to package a set of pens with cach journal, pricing the package at $2 more than the price of the journal alone, but still less than the price of each product alone. Graham's new strategy is an example of the pricing strategy of bundle pricing multiple-unit pricing price lining secondary-market pricing captive pricing