Well, I won't technically be open for commissions until two or three more weeks, but in case you don't get any other offers, I figured I'd reply anyway.
I draw reference sheets for $45+. Example:
http://www.furaffinity.net/view/4168127/The $45 base price will get you a front and back view with an eye close-up and color palette. Extra detail drawings, text details, and other items will make the price go up.
As for turnaround time, as I said, I probably wouldn't be able to start for another couple weeks, once my winter holiday from school starts. Reference sheets take the longest out of everything I draw, so once I do start it could take another week or two after that.