I have a question about AMEX BVG. I'm having an order of $150 at staples.com, and I used the 30/150 coupon. But of this $150, there're two items I want to PM: one is $80, i want to PM to a site which has it for $60; another item is $40, i want to PM to a site for $17. But will AMEX say that the...