$30 for a custom one of a kind FERAL monster design. If you want anthro then it will be $40 since they require more time and effort on my part. They will include one flat color full body image as a reference along with a close up of any needed details (mouth, eye, etc.)

Design examples;
http://www.furaffinity.net/view/12903725/ (a reference like this will be pricier and take a long time, but if interested please ask)
http://www.furaffinity.net/view/10731558/
http://www.furaffinity.net/view/10414654/