My wife says 20 percent, and I think she's crazy. My standard tip for delivering a single pizza, regardless of price, is $2. When we order a cheap pizza, that's close to 20 percent, but it is more like 10 percent at our favorite pizza place.My contention is that the delivery driver is doing the same thing regardless of the price of the pizza.n restaurants, I always tip 20 percent, and often more when the service warrants it. I was also a bartender for many years, so I understand the etiquette and importance of good tipping. Asking strictly about delivery guys. Thanks,