Timing belt change at i10 1.1 from 2009

The i10 1.1 from 2009, which my wife loves hot and intimately, has just grown 5 years old. He has only 28,000 km down, but according to the service plan after 60 months probably already needs a new timing belt. What do you think is a price of 320,- Euro for the change with the replacement of all tensioners, springs and belts ok?