Free Shipping
Bob believes in Free Shipping.
Bob buys items that the vendor sells for $30 and then builds another $10 into the price to offer "Free Shipping"
Bob buys 3 and pays $120 with "Free Shipping"
Sally finds items at the best unit price and buys 3 items at $30 and pays $10 shipping.
Sally pays $20 less, but silly Sally.... She didn't get "Free Shipping".....
Don't be a Bob...