Tall Latts and the Real Exchange Rate between the Euro and the Dollar. According to The Economist, in early 2004 the average price of a tall latt in Starbucks in the United States was $2.80. In the countries that use the euro, the average price was 2.93 euros. Because the exchange rate at this time was 0.79 euro per dollar, the dollar price of latts in the euro area was $3.70. Part 2 a. A latt would cost the same in the euro area as it did in the United States if the exchange rate between the dollar and the euro was enter your response here. (Enter your response rounded to two decimal places.)