While I certainly don't mean to dampen your enthusiasm, it takes more than open source culture to get those prices to drop. This industry is an absolute minefield for intellectual property. Just like 2D printing, 3D printing manufacturers make roughly 70% of their cash from the sale of materials, and this means there's no incentive for them to drop.

Of course, this isn't stopping people from knocking them off for cents on the dollar, but still.