You can buy Eridu Arcane albums at the following places:

iTunes music store
Download the album at iTunes.

Contact Cynfeirrd for wholesale orders.

Shadowland accepts payment on delivery in Norway, and is recommended if you are unable to pay with a credit card.

Gompa records
Gompa records accepts all major credit cards.

Trimail is a German mail order outlet.

Middle Pillar
Middle Pillar is an American mail order outlet and distributor.