A few hours ago the insolvent Austrian airline Niki was bought by the owner of British Airways, IAG for a whopping \$24.01 million (plus a further \$19.08 million to provide liquidity to the company). This was the highest offer available.
The acquired assets include 15 Airbus A320 and landing rights for some European airports.
So far this was basically a summary of the Reuters article.
Given that Niki kept their business up until December 14th, 2017 it can be assumed that the aircraft are well maintained and properly working.
So summing up and getting to the question, the price seems rather low for 15 airworthy A320 aircraft in my opinion.
Did IAG get those aircraft for unbelievably low cost, or is the amount in the ballpark for such a deal?
Edit: The article also states that the landing rights are the most valuable asset of the deal, thus further devaluating the aircraft.
Update: As many comments point out, the aircraft enclosed in the deal were not Niki's own, but leased. To date I have only found German-language sources that indicate this.
Update 2: This source (as hinted by @Eike Pierstorff) clearly states, that the aircraft themselves are not included in the deal. They are in possession of Lufthansa, which in turn is bound by this document (section 5 paragraph (40)) to lease or sell the aircraft to any possible acquirer of Niki (IAG in this case) at market terms.