Talked to Amazon Rep about the credit not applying to any of the sales items on the editor's list.. They said it will kick in $5 discount starting on January 5th.. which is ironic since most of these games on the list will be out of sale on Sunday...
It's doesn't work consistantly but worth a try, put the items in the cart and then email the CSR from the contact us menu and send the link for the product.. it has been 50/50 on many of the items.. typically they credit you the difference.. but you will know in advance what they want you to...
For those with Amazon Prime and have been a loyal customer for many years, you might want to try Amazon for PM on D3 since you have a clear link to it...