This is the place where Stones fans can advertise anything for sale, wanted, trade or whatever, from fan to fan. Advertisements are for free. To see the old ads go here.
Looks kosher to me... Notice how high they price their Empress Valley titles. If they were dealing in cd-r copies they wouldn't charge 300$ for such an item.
It looks ok. I just glanced and didn’t see any DAC titles. Those are the only ones I will buy anymore. But I don’t think I would hesitate from buying from them.
Try a small purchase (if possible) and see how it goes.