If you look at the bid history someone (normally a second, third or forth account held by the seller - note in this example it is the 2***7 user) is bidding to increase the price in a very short time frame.
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It's done to make people think the watch is special, FOMO. If the seller ends up winning the watch with their second account (ie they are not very good a shilling) then they will cancel the sale and relist the item.
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