CobraLily...
Since i am not sure exactly what you mean...to make it yourself the price would depend on materials used. The fur i am using for my first pony suit (that I am going to sell) cost about 13 bucks a yard, and you need 5 yards to make a full suit. Plus I am using a "surprise" material for the mane and tail and that cost 40 bucks. So at least 130 bucks to make a full suit...and about 60 to make a partial (head/legs/arms/tail).
I sell them starting at 100 for a basic Partial suit to 200 for a full suit. They are fun to make too. I will post my pony suit here when I am done...should be done in about a week really...Almost done with the head! And my gloves are done.