Not a noob question! It's a deep and interesting question. :)

Pricing art is harder than pricing most other things since artworks are, by definition, non-fungible / unique. This makes it hard for there to be a "correct" price. For the most part, we address this by letting our artists set their own prices (they have more information than we do.) Other factors that play in are the cost of materials and labor (often hundreds of dollars per painting) and the potential for the artwork to go up in price some day, like a stock.