Mine had the same Pro Setup line on the invoice but it just said "Free" instead of a price on my invoice. There was a little question mark that you could click with a popup and this was the only text pertaining to the any setup stuff. The rest of it was about shipping and such.
"Complete Bike Setup
Forbidden complete bikes are shipped 90% assembled and require some technical knowledge as well as mechanical skills in order to properly and safely assemble. We’ve created a manual to help walk you through the steps required to get your new bike up and running. "