Actually, I'm guessing not. If you buy regular printer paper at a store, that can cost around $4-5 per packet. Artistic paper, like sketch pads and whatnot, usually are pretty high. Plus, I don't want to think about how much special artist pens or pencils are, but even regular ones can be $1-2 (unless you get them on sale).
I was in a thrift store the other day and saw an Etch-a-Sketch for I think 40 cents.
Which is strange.
I work for a major office supply chain. Filler paper and leads can be had for cheap...8^)