Why doesn't my $10 credit, from $69 for Delux, to $52 for Delux, show up on my turbotax order summary?

Unfortunately, we cannot see the details of your account or promotions you originally had. 

You can use this link for directions on how to see your payment history.

If you feel you were entitled to a credit that you did not receive, you will need to contact us using this link to discuss your account fees.

Where did you get the $10 credit?  Did you buy Turbo Tax at Costco or Sam's?  They have a special $10 rebate.  But you can't apply it to the Online version.