Depending on how long is left on the auction, there should be an option to end it with the item being sold to the current high bidder…
Note: It is acceptable for sellers to end a listing early and sell an item to the highest bidder at their current bid price. Bidders are permitted to contact sellers with requests to end a listing early for this reason; however, sellers are under no obligation to do so. To end a listing and sell to the current high bidder (at their current high bid), go to the End My Listing Early form and select “Sell to the high bidder”.
You can’t end a listing less than 12 hours before the end of the listing if the item has a winning bid:
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You may cancel bids, but not end the item unless you are selling the item to the high bidder. To do this, go to the End My Listing Early form and select “Sell to the high bidder”.