I was quite happy to participate in the Manly Arts Festival by selling some originals, prints and other stuff with my illustrations (cards, wood blocks, calendars, iphone covers) at the festival market. It was my very first time in the markets so it was a bit stressful at the beginning, but it was also interesting to see how people react to my work.
After some thinking and other market experiences, I don't think I should focus too much in markets as I don't want to become a "market artist", though I'm happy to participate once in a while only in markets with an independent artist focus.