BRITNEY Spears' Melbourne concerts look set to be derailed as fans flock to offload tickets to her shows.

Hundreds of tickets to her Rod Laver Arena shows were listed on eBay this week.

The sell-off by fans follows a lip-synch controversy that has dogged the star since she arrived in Australia just a week ago.

Dozens more went on sale on Thursday after the pop princess failed to wow fans with her first Melbourne show on Wednesday night.

Some have been listed with a starting price of just 99c - with no reserve.

At Rod Laver Arena on Wednesday, fans walked out early in disgust at a lacklustre performance with some demanding their money back.

Other disillusioned fans were offering to give away premium tickets outside the venue. With tickets ranging between $200 and $1500 they were promised "a dazzling display of music, dance, magic and theatrics" at the year's "biggest spectacle".

Instead they said they felt ripped off.

Spears came under fire for sloppy dance routines.

"If you're going to mime, at least learn how to dance," one disappointed fan said. "It was the worst $200 I've ever spent."

Independent ticket broker Shaun Black said the Circus tour was a flop.

"It has been really tough. I will lose a lot of money with this tour," Mr Black said.

'But it's not just my tickets that aren't selling, people are just deciding they don't want to go," he said.

"The market has been flooded with people wanting to offload their tickets and now there's just too much supply.

"There were more than 300 tickets listed for Britney on eBay the other day - I have never seen anything like it.

"But no one wants to go."

Spears, who regularly keeps her fans updated through social networking site Twitter, made no comment about the show.

But her manager Adam Leber told fans: "Britney rocked it in Melbourne last night!"

He said despite the lip-synch controversy, she had received rave reviews.

Spears performs at Rod Laver Arena tonight before heading to Sydney for the next leg of her tour and will return to Melbourne on November 27 for a final show.

It is believed sales for Spears' Brisbane leg of the tour have been so poor some tickets have been slashed to just $50.

Originally published as Fuming fans ditch Britney tickets