I agree with Mr. Pink. Why are some jobs tip-able and others not. Why tip a food server 15%, 15 bucks for a $100 tab. Yet tip a delivery guy $20 for a $7000 pin 0.2%, instead of $1050...15%.
Wikipedia defines tipping for me, "Tipping is a widely practiced social custom in the United States. Standards vary, but generally it is given for services provided in table dining, golf course, casino, hotels, food delivery, taxi cab and salons."
Sorry pinball delivery is not a tip-able job.