With an order of magnitude difference, expect vending machines to scale rapidly:
The economics make it easy to see why. Mall stores produce about $330 a square foot a year, while a 28-square-foot ZoomShop can generate $3,000 to $10,000 a square foot a year, Mr. Smith said.
via Futuristic Vending Machines That Don’t Nickel and Dime You – NYTimes.com.