CHRIS Hemsworth has delivered Tourism Australia an estimated $50 million in globalÂ advertising value, but it -remains unclear how much itÂ cost taxpayers to secure theÂ Hollywood heart-throb to voice the campaign. 
The star of Thor was appointed as global ambassador for the nation's peak tourism body and voices the new $40Â million campaign.
The Federal Government and Tourism Australia yesterday confirmed Hemsworth (pictured) had been paid for the gig, but would not reveal the price tag without approval from the actor's camp.
Both the Government and Tourism Australia said Hemsworth accepted an offer lower than the commercial rate. It is believed Hemsworth was keen to do the role on a patriotic basis, rather than as aÂ commercial decision.