It was also revealed that bringing the Games to Glasgow had cost £380,000 more than the original budget.

 

Last year, Mr Casey - then bid director - told the BBC Scotland news website that £5m from the public purse would be spent on the bid.

 

The operational review report, published today, revealed £6.21 million had been spent on securing the Games.

 

Of that figure, public sector support totalled £5.38 million.

 

A spokeswoman for Glasgow 2014 put the budget increase down to an enhanced final presentation at the Commonwealth Games Federation General Assembly.

 

Derek Casey, the bid's chief executive, described the spend as an "investment".

 

Casey said: "The Games will bring a projected £81m back for Scotland, £26m for Glasgow specifically, in jobs, tourism, investment and other economic activity."

 

Casey, who is due to step down shortly, said there would be "rigorous financial controls" on the Games' budget.

 

More than £1.2m was spent travelling the Commonwealth to promote the bid and more than £500,000 was spent on specialist consultants.

 

Professor Fred Coalter, an expert in sport policy and the social impact of sport at the University of Stirling, said Scotland got value for money from the bidding process.

 

He said: "In terms of the travelling undertaken by the senior officials it is very important to remember that they were part of a wider task of putting Glasgow on the Commonwealth map.

 

The report puts forward "proposed ticket price ranges" which include free public transport.

 

These prices were first touted in May 2007, prior to the announcement that Glasgow had won the right to host the Games.

 

A total of 10 per cent of tickets for the opening ceremony at Celtic park and the closing ceremony at Hampden - between 5,000 and 6,000 for each venue - will be free and 10 per cent will cost £5.

 

More than a third of tickets for both ceremonies will cost £150 or £175.

 

Casey said: "The ticket prices will be on a par or cheaper than those for Manchester in 2002.

 

"Out ticketing policy is designed to be fair, inclusive and to allow our spectators a range of ticket choices."

 

Those who want to watch swimming could be asked to pay between £25 and £90, with discounted tickets available for £5.

 

Other events such as athletics, rugby sevens and boxing will have a top ticket price of £40, with discounted tickets costing £5.

 

Cycling, diving, hockey and shooting are among the sports with a top price of £25 and a starting price of £3.

 

Free events include the triathlon and mountain biking.