Price Comparison

In my bag everyday, I carry a cheap watch. I say cheap because it is cheap by American standards; $25 is not much to pay for a watch. It does what I want it to, in that in keeps the time accurately and has a stopwatch so I can time myself when I go running. In America, as we all know, the currency is the dollar; in China, it's the RMB; in Thailand it's the baht; in Cambodia (where I am right now) it's the riel. There are approximately 7 RMB to the dollar, 30 baht to the dollar, and 4000 riel to the same dollar. Now consider the price of a bottle of water. In China, the average cost of a bottle of water is 1.5 RMB. In Thailand, it's 6 baht. In Cambodia, they use the dollar anyway (since their own currency is so unsteady), so it costs $.25, or 1000 riel. In America, to be optimistic, I could theoretically spend $1 and get a bottle of water. However, I have been told that prices have sky-rocketed while I've been away, so I cannot claim that my information is current. Here is what I have concluded. In Thailand, my watch can buy me 125 bottles of water. In China, my watch can buy me 116 bottles of water. In Cambodia, my watch can buy me 100 bottles of water. In America, my watch can buy me absolutely no more than 25 bottles of water. On a good day.