Jeff,
plus there's also the price to purchase brand new bowling pins $11,500+ every 2 - 3 years (for a 20 lane centre) $25 per pin x 20 pins per lane + 40 pins (in case of some dodgy pins).
price of bowling balls that the general public can use: $30 per ball x 120 every 4 - 5 years (again, a 20...