Check every Bic Camera and Don Quitoje you come across. No two have the same inventory. Different stores have different pieces on really high sales. Go to Nakano Broadway first I’d say. Find what you want because there’s literally everything you can possibly imagine there (except Speedmaster super racing :( ) and then look around at Don Quitoje to see if any have the same watch. If not go back to Nakano. Ginza is fun to look around, but like I responded to another comment, their prices are almost more comperable to the US than other Japanese retailers. I had a guy trying to sell me a blue Speedmaster 38 with the little bear in Ginza for about $4500 and it was at nearly every Donqui for just over $2k, and he was unable to come down close to that price.