I just purchased another pillow. Only one. PayPal was billed correctly for the one pillow and shipping charges.
I re-checked the amount billed the customer on the first order and that was also correct, but the customer called because the email that came back to him from email@example.com showed the shipping and handling doubled. Only one pillow was purchased.
The issue is within the program. The email that comes back from firstname.lastname@example.org has the shipping and handling doubled. It also shows doubled in the order detail in the Store Manager.