As far as i know Platinium one paid for everything and in return they got the ticket money. The guy from platinum one on the radio said this and that it was more an attempt to build the reputation of the company than to make a huge amount of money.
+1 - I heard the same/a similar piece
In addition, Platinum One picked up the tab for the trip from the time they left Madrid to the time they returned. Madrid were keen on a Northern Europe venue as it affords more time to train. The day they left Madrid, the temperature was 38 degrees.