How to change release price via the iTunes store?

Hi there,

Not long ago I distributed an album through a third party site called CDbaby, I saw that our release was priced higher than it should be, I know that the iTunes store automatically prices the release based on how many tracks it has, it's currently £15.99 for the album and £0.79 for each song, does anyone know how to lower the price or does anyone have a number/email I could contact, I've seen contact support section, but I'm not sure which was relevant in which i needed?

Below is the release;

https://itunes.apple.com/gb/album/authentic-deadstockgrime-presents/id972762978

Thanks,

Terrance.