Can somebody please explain this bid history to me?
eBay UK Item Bid History
Lets say you're bidding for something. You see a bid of £10 on the item. You bid £100. Ebay will enter an amount that is enough to beat the previous bid, so it might enter £11, Then another guy comes along and bids £50. His bid will be entered as £50, but immediately your bid will jump to £55 without you doing anything, so the other guy might try £60, and yours will jump again to £65 - and so on until the other guy gets to £105, so you'll see all his bids but only one of yours which will now show as £100, If you look somewhere, there;s an option to "show automatic bids", and then it'll make more sense.
The main point is that at any time, the highest bid shown may not be the maximum that the guy has actually bid,