For those planning a trip to Uz, it may be usueful to know that prices given in som in the LP are about half what you'll pay now. In other words, double them.
Many GH will change US$ at 2000 som. In the markets you will get 2100 - 2200, but you either have to (a) trust the guy completely, or (b) carefully count perhaps a hundred banknotes in public while doing something technically illegal!