The Skyfall hitmaker was approached by South African fruit juice tycoon Vivian Imerman - who is worth around £400m - to sing a 25-minute set at the nuptials of his daughter Megan at London's upmarket Grosvenor House hotel, but he decided against hiring the services of the award-winning superstar after discovering the brief performance would cost £2.5m (about R35m).
A source said, "Vivian is planning a lavish wedding.
"He paid Amy Winehouse thousands to perform at his eldest daughter Bianca's wedding three years ago. He hoped to do the same again with Adele.