It was sold by a seller with zero rating. No eBay/PayPal like protection on Yahoo Japan. If the buyer gets the watch, it’s a win. If not.....
To be honest I suffered a shock recently as well when a 1000++ positive rating seller from yahoo auctions japan didn't deliver a watch... was a first time for me as I believed Japanese have a lot of integrity....
Chances are it was a good bet. Problem is the increased risk. In the interim, another 105.003 sourced from Japan 105.003-65. 7912/6
agreed with the risk and therefore didn't pursue beyond 7000 USD it could be 7000 USD loss and no watch
Had the watch been better presented from a reputable seller, the price could easily have been over $10,000 yen equivalent.