The Montblanc offered looks authentic in the pictures; a definitive judgement is, however, only possible with the piece in hand, so a written authenticity confirmation before purchase can be sensible. eBay auctions may not be ended prematurely at will but only for a valid reason (e.g. damage, theft or error in the description); otherwise the highest bidder has a court-confirmed right to the article at the last bid price. In case of a description error, a contestation on grounds of error is possible; instead of ending the auction completely, the seller can also delete individual bids and correct the text. Against joke bidders, several legally binding judgments exist in favour of sellers (e.g. AG Bremen 16 C 168/05, LG Aurich 1 S 244/08), so a lawsuit can be quite promising.