We have no source for this $9000 to win the GP, so take it with a grain of salt.
Last time I remember, the UFC offered him $25000(or somewhere around there). Obviously DREAM offered him more or more incentives for him to go their instead. I remember Hansen was very vocal during the PRIDE buyout(and the buyout of his contract) and he was pissed that the UFC was trying to like bully him into a contract and tell him he is not worth the money he wants and stuff like that.
Support Mixed Martial Arts, not Ultimate Fighting