'Cheaper' is an interesting word. This is high capital cost purchase to reduce variable costs. Expensive to buy compared to the costs of hiring an employee, bu

'Cheaper' is an interesting word. This is high capital cost purchase to reduce variable costs. Expensive to buy compared to the costs of hiring an employee, but (I would assume) low cost to maintain, and runs at all hours (so it partially replaces multiple employees). It's not a question of whether it will pay off, but in how much time. If the answer is 20 years, it's not worth the cost. If the answer is 3 weeks, every store will have them in the next six months.