A quarter pounder with cheese meal in Dublin is 6.99 Euros, which is 9.28 USD today. (Irish beef is really expensive.)
A quarter pounder with cheese meal in London is 4.79 pound sterling, which is 7.32 USD today.
A similar sized hamburger with Stilton cheese from Badass in St. Julian's, Malta, the Posh Burger, is 11 Euros, with salad and fries, no drink included, which is 14.60 USD today. I cannot remember how much the quarter pounder with cheese meal was in St. Julian's in January, and I do not have my receipt. Much less expensive than the Posh Burger...
The WiFi is key.
The quarter pounder with cheese meal in New York City is 7.29 USD and minimum wage for Mac workers is currently 7.25 USD, four cents under the meal price. But, the minimum wage is going up in December to 8 USD. Some people just eat one full meal a day, btw.
McDonald's had revenues for 2012 of $27.6 Billion USD.