Britney Spears’s “Circus” tour, currently in the middle of an eight-date engagement at London’s O2 Arena (June 3-14), took a huge hit on its first two shows. When floor seats weren’t selling for her June 3-4 concerts, ticket prices were slashed 98 percent, from £100 ($162.55) to £2 ($3.25).

“Organizers were mystified as to why, but really did not want a bare arena floor. It could send out a message that the star’s run in London hasn’t been a complete success,” an unidentified source told UK-based tabloid The Sun.

The tabloid’s source continued, “So on Thursday (May 28) they contacted a Web site who specialize in getting rid of last-minute tickets. They all went, but taking a £98 hit on each sale wasn’t particularly pleasing for anyone concerned.”

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Spears is currently on the UK/European leg of her comeback tour, which kicked off in her home state of Louisiana in New Orleans this past March 3. After finishing up this leg on July 26 in Berlin, GER, Spears and company will return to North America for a recently announced 20-city run for summer 2009.