Online from publication. 4 pages., Report about a panel presentation at a meeting of the Produce Marketing Association. Panelist moderator reported that food delivery services such as Grubhub, DoorDash and Postmates can charge restaurants 20-35 percent commission per order, in addition to the monthly fee for the service. Customers typically pay a delivery fee, a driver tip, and sales tax. The moderator urged restaurants, "Be smart about where your money is spent, and be firm, and try and make it a good experience for yourself and your customers."