To be fair, the grocery stores' own delivery services charge similar markups, and they don't allow coupons. A spot check at Vons (Safeway) for items I just bought yesterday shows more than 20% markup for delivery orders, plus a delivery fee. I got 1 gallon of milk for $3.49 and the same brand is $4.69 for delivery, a 34% markup. People know they're paying a premium for grocery delivery (that's where the profit margin is), and any delivery charge is there to encourage people to spend more per order rather than ordering a few items at a time.
