commercial Poser stuff is normally dirt cheap, the vendor relies on volume. Custom work can range from $10 an hour and up.  If the vendor can market it as well then the price may come down a little. 

 

The wishing well forum gets looked at by some vendors and some hobby modellers who do stuff for free (or cheap) so it is worth a try.  A commercial (or free)  product is going to be much cheaper.