One needs to define "high traffic".
My GB Pro at the Big Apple Coaster & Arcade in NYNY Casino Resort, in a bank of 10 modern Sterns, grosses $1200 per month over the last 13 months. This is a true "high traffic" tourist account with more than 1.2 million visitors per year to the arcade. Two visits per week are necessary for proper operation of this account.
My GB LE at Fremont Arcade, in a bank of 10-16 pins, grossed $387 per month during the 6 months it was on location. This is also a high traffic tourist account, but not anywhere near NYNY. I would consider this number "high" revenue for a single pin street account.
Rule #1: The cashbox doesn't lie. I don't give a shit how popular any game is, if there's no money in the cashbox, something's wrong.
Rule #2: Every location is different. A cash cow in one location may not earn anything in another, vice versa.
Rule #3: Every "location" within the location is different. Take a pin from one side of a room, move it to another side, and your revenue will change.
Good luck!!
EDIT:
NYNY is on a swipe card system, Fremont is on DBA & Tokens.