Let's say you go into a thread and are okay with the prices so you fill in a form for the thing you can afford, but when the artist replies the price is 6 times the price posted in their pricelist.

What's a polite way to say that it's too much? Like...I could afford it if it was 2x what the pricelist said, but this is a huge jump. :\ I wasn't looking for anything special, either. Just a black and white sketch of a dragon with no clothes.