Attached Link: http://www.cacheforce.com/3d-model_files/an.jpg

I got a number of anatomical meshes from Cacheforce some time ago.  The prices seemed okay to me.  I just jumped to their site & it looks like they still have them available. Have a look.

I also bought some items from Zygote (original name of DAZ3D, split off some time ago), but I recall they were quite a bit more expensive.