If your art takes a long time to do, then you should definitely charge more for it! Especially if you follow through. I know I've tried to do art requests and trades a few times, and people seem to like my art, but if I can't draw their character, then it's pretty much hopeless and I feel really discouraged about art for quite awhile :c
Thanks for your input! I thought about it for a minute, but if I lowered my prices, I doubt I would get any more business than I already do! I already have wonderful regulars at my shop, as I'm sure you do as well ^^