down3gr33ns is correct.
OJ had an agreed charter price with NLK people to operate NLK AKL NLK (twice) for a group of around 100 from NZ to attend Country Music Festival on NLK.
OJ gets taken over and the charter price DOUBLES!
Perhaps new OJ owner realised they had a number of unpaid bills in NZ and they needed to pay up before they could operate. Only way to pay the bills - up the price of the charter.
Still a lot of bad blood over the OJ aborted trans-Tasman plan in NZ.