BD-R discs cost more than DVD-R discs - Why?

[roxics]

Seems like it should be a fairly simple answer. But I'm not sure it it's just because BD-Rs cost more to make, due to more advanced technology and complications in manufacturing, or if it's more of a supply and demand issue. Economies of scale kind of thing, where more people are buying DVD-R discs and so the price is lower.

Another way to phrase this might be, if DVDs had never come out and Blu-ray was dominate, would BD-Rs be priced similar to what DVD-Rs are priced at right now?