The Betan dollar was the unit of currency on Beta Colony. It was considered one of the hardest and most stable currencies in the Nexus. The exchange rate with the Barrayaran mark had been five marks to the dollar but improved to four after the War of the Hegen Hub. A popular phrase, "I'll bet you Betan dollars...", reflected the currency's stability. While it is impossible to directly compare future currencies with the values of modern ones, the following list of transactions can give an approximate sense of its value: