Real's spending is at odds with the financial climate, but Blatter insists the Ronaldo deal merely emphasises the healthy state of football.
Related ArticlesGlazers dismiss 'paranoia'United in Valencia approachWho can fill Ronaldo's boots?'World's greatest league?'Sport on televisionSven-Goran Eriksson backs Manchester United in Cristiano Ronaldo slavery row "What does £80 million mean when 10 years ago another player with the same name [Ronaldo of Brazil] moved from one club to another for $50 million?" Blatter said. "It means that there is still a demand to have the stars.
"We are in a very sensitive market, in an economic crisis, but football remains a fantastic product, not just to buy or sell but a product that gives people what they want – emotions. They want the stars."
Real's transfer spending has raised questions in Spain, however, over how the club is funding its recruitment policy.
Barcelona's financial director, Xavier Sala i Martin, said: "I would like to know where Madrid go to get their money."