Tristan knows about a few ideas on how to get that amount of money. He knew that the money Roxy was talking about diplomats,trade ships or the duke's house. He trust that Roxy will not get him or anyone else in the grew killed but all these options were hard and he knew because he tried some.... Like he tried to steal cargo from a galleon called 'Wolf Slayer'. He failed after being seen by a scout but back to the matter at hand.

"We better walk out with barrels of gold and a pouch of gems.." Tristan said to Roxy

[@KatherinWinter]