Ebay userID = chrono 24 UK (as is the company name in the address) and the watch appears to be listed on Chrono 24 but you're not buying from Chrono 24?
I'd love to be in a position to have to think about whether a watch is worth £160k - I suppose it is if at least one person is prepared to pay it - but eBay is not the place to spend that money on a watch.