For stuff that can ship cheaply or flat rate, that's true; just add the shipping cost to the item price. The cost of shipping something big and heavy, however, varies considerably with distance. Sending a 30 pound monitor costs over $80 cross country, but only about $30 in state. To offer 'free shipping', I'd have to overcharge nearby buyers or take a loss on a cross country buyer. If you advocate for free shipping, you're really asking for higher prices as most sellers roll the highest possible shipping charge into the item's price.