Sounds like you have it all figured out Jim...lol.
Very wrong, but I do know a few things about taxidermy after all these years in this business. I have looked at other taxidermists sites and price lists and shake my head at some of the low pricing. Then again some are not worth even the low price that they are charging. I think it is a mistake to charge separate for mount and then base except when a client orders a mount without a base up front. People like "a" price and nobody likes add on extra fees to a invoice. I am not a great taxidermist but I am pretty good and I have lots of experience and I charge most than most, I take in lots of work in a small town that is saturated with very good taxidermists and my business makes a profit.