I wanna buy one too! You should have a website of your own, and sell them.

One of my favorite artists does that. His works sell for as little as $1,000 and up to like $20k or so depending on if you buy it framed or not and how detailed it is.
He also sells copies made with archival ink on archival paper for around $100 or less and sometimes those Giclee prints or whatever they're called.