In this case it is because the same bidder bid twice, and each of those bids is equal to or greater than the price calculation ("current bid" while the auction is running, which is what the final price would be if there is no further activity before the end of the auction) which is based on what the second highest bidder's maximum bid is. In the absence of a second bidder the price cannot rise above the Starting Price that the seller set (unless s/he also set a Reserve Price which isn't the case here and would complicate the calculation with several "ifs"). eBay hides the full amount of any bid by the highest bidder that exceeds that price calculation by substituting the price calculation for the actual amount of the bid.
If there is more than one bidder with the same bid amount showing for each, it is because they both bid the exact same amount (the tie goes to the earlier of the bids; but note that if the winner of the tie has multiple bids showing at that amount the later ones are higher bid but due to the combination of the rule in the first paragraph about hiding the full amount of any bid exceeding the price calculation and an unpublished rule change after a class action settlement concerning eBay raising the price of someone rebidding while in the lead by less than an increment all the bids higher than the tie will display at the amount of the tie bids (unless someone other than the leader has placed another bid after the tie which would raise the price calculation to higher than the tie amount.
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