> Why does the restaurant charge me the same for a burger at 10pm as a burger at 7pm (after all, the staff are already being paid for the day and ingredients al

> Why does the restaurant charge me the same for a burger at 10pm as a burger at 7pm (after all, the staff are already being paid for the day and ingredients already purchased)? Actually, it's not uncommon for a food vendor to drop its prices at the end of the day, e.g. https://www.itsu.com/about/sale https://www.itsu.com/about/sale That doesn't invalidate your point, though. I'd also suggest that the risk associated with a transaction should also be factored in. The cost of processing small (e.g. $100) and large ($100,000) transactions may be the same but the potential cost to me if I drop the ball is several orders of magnitude larger.