AC/DC has started their tour in 2009, and the opening city was Oslo, Norway. The tickets for that concert were sold out within one hour. Some Norwegian papers commented that the concert looked very similar to the one they had a couple of years ago, but that it still was a great show!
All around Europe the tickets has been sold out very fast, and so also for the Budapest concert. AC/DC will come to Budapest 23 March, and TicketPro has no more tickets left (they were sold out in approximately two weeks). Still WorldTicketShop claim to have tickets for the concert, so if you need some, just visit WorldTicketShop. The tickets there are of course very expensive, but if you really need those tickets, you might pay the price anyway.
While waiting you can watch this Youtube video showing some scenes from the opening concert of the Black Ice tour (video posted in 2008).