Just got this email:
Hello,
We're contacting you about recent orders for Amazon.com Gift Card in a Gift Box Reveal (Classic Black Card Design). We recently discovered an error that caused the item to be displayed at an incorrect price.
In this case, we're unable to offer this item for the incorrectly posted price. For orders that were already shipped, the gift cards will be provided for the amount of $15 to match the amount paid.
At any given time, despite our best efforts, a small number of the millions of items on our site may be mispriced.
To help make up for the inconvenience, we've applied a $5 Amazon.com Gift Card to your account. This amount will be applied to your next eligible order automatically without entering a claim code.
We look forward to seeing you again soon.
Sincerely,
Customer Service
Amazon.com