For a long time my company enables online strores to cooperate by cross-promoting each other's products. We need your help in solving a dilemma regardig a new feature we're working on:
Given that you buy good converting traffic from a specific source, but the cost is high - would you be willing to promote in your site products that will be selected by you, if it will cut the price that you pay?
Example: You sell dresses and you buy good traffic at $2 cost-per-click. If you will place a dedicated widget that will recommend on scarves which complement your dresses (from brands you approve) - you will cut the cost in half to $1 cost-per-click.