Beautiful! I'm not a photographer, but I take pictures of my knitting for my blog, and I usually get frustrated trying to photograph the feel of the yarn. So I am super impressed by how you've captured the texture of the yarns.
You ask if non-knitters would be interested, and I think many would. Have you ever taken a non-knitter into a yarn shop? Even if they have no interest in learning to knit, they'll stare at the colors and poke at the textures. They'll whine about wanting to buy something but not knowing what to do with it. Your pictures seem to be a good compromise--yarn for non-crafters--a way to buy the yarn without feeling guilty for never turning it into something else.
As for purchasing--if I didn't buy those pictures it would have more to do with my lack of funds than my lack of desire.