Fees paid to the company responsible for "under-valuing" Royal Mail compare favourably to similar deals agreed by the Labour Party, Business Minister Michael Fallon has said.
Mr Fallon insisted that even though the share price today was around the 530p mark, up 200p from its sale price of 330p, it was "too early" to draw conclusions.
He said: "It's far too early to judge the long-term performance of the Royal Mail share price.
"With any initial public offering you will see volatility in that price and it is too early to make a judgment on it."
Labour MP for West Bromwich West Adrian Bailey asked: "Can you tell us how much money was paid to Lazards for so comprehensively under-valuing Royal Mail?"
Mr Fallon replied: "The fees made to the Government's advisers are going to be disclosed in the normal way to the National Audit Office, who are of course looking at this sale as they looked at the Northern Rock sale.
"But they compare very favourably to the fees charged by that party's advisers in the sale of QinetiQ some years ago, when 10 senior managers were allowed to walk away with £107 million and no shares were sold to the public at all."
On the issue of the valuation, he added: " So far as the banks are concerned, a whole number of banks were consulted on the value of Royal Mail and the value established I think around the midpoint on the range of the advice we received."
Shadow business minister Ian Murray said: "Given that many investment banks valued the company at £1.7 billion more than the sale price, that the sale was over-subscribed by 20 times, and the share price has steadily risen to more than 60% of its initial value, can I ask you when you knew it was so over-subscribed, why you rejected the raising of the price range? And if you agree with the Secretary of State that the loss of upwards of £750 million to the taxpayer is both froth and ill-informed?"
But Mr Fallon insisted that "price volatility" was to be expected in the immediate aftermath of a sale. He said: "But let's be very clear this sale was popular, it was over-subscribed and it was successful." Addressing the Labour benches, he added: "When that lot tried to sell Royal Mail they failed."
Business Secretary Vince Cable told the BBC's Today programme two weeks ago that the bulk of the shares had gone to "long-term stable investors" in the UK.
"What matters is where the price eventually settles in three or six months' time," he said.
Mr Cable said: "You get an enormous amount of froth and speculation in the aftermath of a big IPO [initial public offering] of this kind.
"The bulk of the shares have gone to long-term institutional investors, stable investors, some overseas investors, but mainly British pension funds and insurance companies who are there for the long term.
"The objective of the exercise, which fits in with what we want for the Royal Mail, is to make sure it has stable, long-term investors."