You don't save a full 80%. Assume the item you want is $100. 40% off will bring it down to $60. Then, you take off another 40% and that gets you to $36 as the total price. If you were able to take off a straight 80% the total price would have been $20. They try to fool people that way.
Oops, I misread your message, thinking you were talking about only one item. Seems like it would still just be 40% per item, unless you pretend you paid full price for one and took the total savings off the other. Which is perfectly okay!
Last edited by MFord; 11-29-2016 at 12:46 PM.