"Who would be more inclined to offer a bigger tip, someone that felt they overpaid for a service, or someone that felt they got a bargain." That is not my point at all... My point is that the bargain hunters are the cheap ones and will always tip less irrespective of whether they feel they got a bargain, or not. The other bargain rider would be the poorest of folks who can't afford to pay more... and the size of the tip there is obvious! There are no "CarSmarrt drivers", just drivers for other ridesharing companies that have added the CarSmartt App.! Revenues from actual riders (NOT drivers) is all that matters... http://st3.depositphotos.com/3585621/15682/i/1600/depositphotos_156820996-stock-photo-man-showing-his-empty-pockets.jpg