Quoted from Wikipedia, just to give you an idea on how much a zimbabwe dollar is actually worth compared to a US dollar...

In August 2006, a new revalued Zimbabwean dollar was introduced, equal to 1000 of the prior Zimbabwean. The exchange rate fell from 24 old Zimbabwean dollars per U.S. dollar (USD) in 1998 to 250,000 prior or 250 new Zimbabwean dollars per USD at the official rate,[70] and an estimated 120,000,000 old or 120,000 revalued Zimbabwean dollars per US dollar on the parallel market,[71] in June 2007.