In the Demon Princes pentalogy by Jack Vance the currency 'SVU' or Standard Value Unit was described as being employed on most major settled worlds and having a value equivalent to one hour of common labor.
Kirth Gersen is the protagonist of the five Demon Princes novels by Jack Vance, set approximately 1500 years in the future.
Princes Highway | demon | Parc des Princes | Princes Town | Princes Street | Princes Risborough | Demon | Princes in the Tower | Onimusha 3: Demon Siege | Wake Forest Demon Deacons men's basketball | The Demon Headmaster (TV series) | The Demon Headmaster | Princes Freeway | Greenock Princes Pier railway station | Demon Princes | Demon Knight | Demon Island | Three Princes | Six Demon Bag | Scream of the Demon Lover | Princes Risborough railway station | Princes Park (stadium) | Princes Park | Kamen Rider Kiva: King of the Castle in the Demon World | Demon with a Glass Hand | Demon's Claws | Demon Attack | Two Princes | The Frog Princes | South Carolina's Ieasia Walker drives to the basket against DePaul's Brittany Hrynko, while Blue Demon coach Doug Bruno |
Dar Sai is a fictional planet referenced in author Jack Vance's fourth "Demon Princes" novel, The Face.
During the events described in The Killing Machine, however, Gersen gains fabulous wealth (10 billion SVU in cash) by running a scam on Kokor Hekkus, a Demon Prince who is holding him for ransom, and on Interchange, the institution that facilities the ransoming of kidnap victims.