Its not the sale cost you should be considering. Its the overall liabilities of the company that is being purchased compared against it's forecasts. Hence the reason why DLH and now IAG can't off load baby.
Its fantastic news in my opinion, however it boils down to nothing more than a hand washing exercise by IAG who, if no buyer was found, would have shut down regional as well.
I'm pretty sure the costs of doing so would have also been a determining factor in the overall sale price.