please check attached 2 images 
I added 2 horses on your account and both horses appeared in order summary + one horse which you entered.
in image 
Mare Horse 1 is Mare 
Horse test 1 is Stallion

order summary link please click on it after login
[[https://breedchamp.com/order-summary/]]

in second image I unchecked both mare from public listing and all subtotal and total are fine.

please let me know I am wrong.