Stores love writers but hate artists

Why does 750 pieces of blank white copy paper cost $3 and I can get a 100 page notebook with lined paper for 49 cents, but 50 blank white copy paper in a note book for drawing costs $14?Why are notebooks for drawing so many times more expensive than notebooks for writing?

Also...since when are skateboards like $150+??? I've been going around looking for a cheap skateboard and the only skateboard under 60$ is a crappy walmart board with plastic barrings. When did skating boarding become a sport for the wealthly where the boards are about the logos not the usability?