It is run by a group of enthusiastic Kaleidescape owners and dealers purely as a service to this community.
... but we strongly encourage you to register for a full account. There is no cost to register for a full account.
That said, the Abyss is available digitally from other vendors and I expect it will eventually be available in the Store.
Do you know where? I checked a few and couldn't find it. I've never seen The Abyss and this thread made me want to get it