Forget the silly debate over pixel counts among digital cameras. There is little visible difference between cameras with seemingly different ratings. For instance, a 3 MP camera pretty much looks the same as a 6 MP camera, even when blown up to 12 x 18!" I know because I've done this. Have you?
Joe Holmes' limited-edition 13 x 19" prints of his American Museum of Natural History series sell at Manhattan's Jen Bekman Gallery for $650 each. They're made on a D70.
There are plenty of shows selling shots from fuzzy Holgas for a lot more money, just that those folks don't tell me about it. Holgas sell for $14.95, brand new, here. You can see an award-winning shot made with a Holga hanging in Washington, D.C.'s Hemicycle Gallery of the Corcoran Museum of Art in their 2006 Eyes of History competition of the White House News Photographers Association here.
Resolution has little to do with image quality. Color and tone are far more important technically. Even Consumer Reports in their November 2002 issue noted some lower resolution digital cameras made better images than some higher resolution ones.