By Jason Simpkins Money Morning August 30, 2007 First it was the cost of a tank-full of gas for your Mercedes SUV. Then it was interest rate on your home-refi loan. But when they messed with your morning ritual – and boosted the price of your the cost of your morning latte, well, that was taking things just too damned far. Coffee-king Starbucks Corp. (Nasdaq: SBUX ) recently boosted its prices by nine cents a beverage. It was the second price increase in 10 months and has boosted the price tag of an already pricey Starbucks morning brew by about 14 cents. The prior price hike – tacked on last October – adjusted for higher labor and energy costs, while the most recent addition to prices was attributed to the big spike in the price of milk, a key component of such Starbuck mainstays as lattes. Milk prices have soared in response to – of all seemingly unrelated factors – a big uptick in the production of ethanol, a gasoline substitute that counts corn as one of its key ingredients. Well, ...