Credit was a currency used throughout much of the galaxy.
Vila referred to Avon nearly stealing 5 million credits out of the Federation banking system (TV: Spacefall). Avon later stated on a plan to lift 100 million credits from the system. The Ultra stated that Avon's theft was in fact of 500 million (TV: Ultraworld)
Tarvin planned to sell Liberator and its crew for 13 million credit, or 12 million without Jenna. This possibly suggests that Blake was worth 2 million credits, the rest of the crew 1 million each, and the ship 6 million. Jenna told Tarvin that the ship's strongroom contained 300 million, "give or take the odd ten million". (TV: Bounty)
Servalan agreed, without authority, to pay 100 million credits for Orac. She told Travis that acquiring such a sum through the proper channels would take years. (TV: Deliverance)
Krantor mentioned the Big Wheel 4 million credits a week. Vila's "win" 5 million was a record, and doubled when he forced the Klute to a draw at speed chess. The croupier mentioned the 1 million reward for defeating the Klute as "the biggest prize in the galaxy". (TV: Gambit)
Servalan agreed to pay 8 million credits for Travis and Docholli, dead or alive. (TV: Gambit)
Jenna called Cally a "ten credit touch" when they distracted the bouncers for Blake. (TV: Gambit)
Hal Mellanby had a 3 million credits bounty on his head. (TV: Aftermath)
Zee and Barr were paid 2 thousand credits for bringing Vila to the Slaughterhouse. This might have been a different denomination to the Federation Credit. (TV: Poweplay)
20 million credits was allocated to the top secret research project on Bucol-2. (TV: Animals)
Gerren estimated Belkov's secret stash of feldon crystals as having a value of 1 billion credits. (TV: Games)
The shipment of gold stolen from the Space Princess had a potential value of 17 billion. Keiller was expecting to be paid 6 billion, but Avon asked for paying 10 billion for it. (TV: Gold)