This is interesting. I hold a standard Y class economy ticket which I bought last minute at Taipei Taoyuan aiport (TPE) but in Taipei they put me in the lounge as well. So when I checked in today at Narita, I asked them what made me so special (of course I didn't mind the lounge, beats sitting in the common area next to someone taking a nap across 4 seats) and she told me that's because I bought the most expensive economy ticket (i.e. at full fare!). Yeah, so I think I might have paid something like 2000USD to fly one way from Taipei to Tokyo to Shanghai. 2 legs, 1 direction. So I'm going to drink all the wine I can get my hands on. Where is the caviar!!!