Edit: While I am almost always open to taking fanart commissions, I will not be able to take anything new until mid-January. I'm working on stuff for a show on very short notice until then. After about January 15th, 2009, I should be back to normal schedule again.
I'm currently taking commissions and have had a few people ask about commission pricing. I price everything based on a formula of a per hour fee multiplied by however long I think it will take me to complete the project in question (and, in the rare case of non-digital work, the materials cost). Anything more finished than a sketch can vary, so these prices are just rough, general averages.
Ink linework: $25
Greyscale of a single character, no background: $25
Additional characters: +$10 each
Background: Minimum +$15 (this will vary a good deal depending on complexity)
Full color digital painting, single character, no background: $50
Additional characters: +$15 each
Background: Minimum +$20 (see note on greyscale backgrounds, same thing applies here)
To get an exact quote, drop me an email at Sphynxtastic@gmail.com . Screenshots always help, preferably well lit, somewhat closeup ones where the character is clearly visible, but just a description is fine too.
I pretty much take paypal exclusively, but if this is a big problem for you let me know and we'll talk.