I was really surprised, we only lost about 20% of sales, or so it seemed, and it was only temporary. We are currently using no PPC at all and are doing almost as well as we did last year this time.
Where do you get the traffic from? (if you don't mind me asking)
Forgive me if i'm wrong, shouldn't EPC for merchants be based upon profit/Clicks? Sales/clicks would put you out of business at those numbers (spend $140 to sell a $150 item unless you have a 94% margin)
You're absolutely right, pardon my over simplification