Consumer New Zealand says Ticketmaster's 'dynamic pricing' for the Oasis tour tickets is likely to be following the law.

People have complained after wildly different rates were charged on the same tickets.

Consumer New Zealand CEO Jon Duffy says as long as Ticketmaster is transparent prices can change, it's not breaking the law.

He says transparency could be improved.

"For example, if you had a running tally of how many tickets had sold and you disclosed that - at which point, the next tier of pricing would kick in."

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