I did open a ticket last Friday, and only got a response yesterday. I was told that costumer service will report it to Gavin and maybe he will do something.
I highly doubt anything will be done though.
I had a similar issue with their Audeze LCD XC/3 bundles. Since I backed too early, I had to go through the "Old Friends" perk to get a LCD3. However, it was $378 more than what bundle was going for. I emailed them, both Casey and Tami told me I had to pay that difference still. I decided not to join the "Old Friends" perk, but didn't mind because I rather have the Pulse Xfi instead of the Pulse X anyways. And maybe it was because I have the Pulse Xfi.
I opened another ticket, explaining the situation for those who got the Pulse X:
Pulse X + LCD3: $2145
Pulse X + "Old Friends" LCD3: $777 + $1746 = $2523
Stephanie, who answered this ticket, told me she'll talk to her supervisors. Then the very next day, they closed the Audeze bundles.
Now they decided to add the "movin' on up" perk. People who joined the Audeze LCD3 (which was only one I think, but still), not only got the LCD3 for $1368, but now they can upgrade their Pulse X to the Pulse Xfi for a lot cheaper than what I paid for the Pulse Xfi.
This, to me, is just ridiculous.