When was the last time your grocer explicitly listed out the shipping cost of your globalized shopping cart? Did it show shipping of orange concentrate from florida? or grains from Iowa?
I think you are intentionally misinterpreting parent. When you buy something online, shipping is almost always a separate item on the bill (unless it's free). Taxes are also clearly specified on the invoice. Food delivery apps and Airbnb take it to the extreme, by charging a relatively small price and then adding surcharges. Uber breaks down price into the driver price, marketplace fee, taxes, and sometimes congestion fees. So yes, breaking down price is common.
