http://www.furaffinity.net/journal/8860459/
And of course 
https://hellostarryskies.tumblr.com/post/177594270209/so-like-i-need-to-raise-about-800-before-fall
Is where all the information you're going to need! 

This one would be about 25$ as it includes two characters. If you want a sketch, please refer to the two pages above.

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