TG quotes "public" prices for J and D. But I was not aware of the Z bucket and wonder whether it is a new fare structure as their public prices on J & C are pretty stiff and too high relative to competition. I was wondering what conditions they typically apply and who can access them. Is it the booking class for all those "promotions" (companion fares, etc..) that they offer ex-Germany and UK, or is it more widely available? Comparing to some Z fares of other airline might not be so relevant. For example, AF offers a myriad of Z fares (with different suffix, e.g. ZHKT, ZHKT2, ZLEISURE, etc..) with different restrictions. On some airlines it is fairly easy to get info on the various fares available (fare conditions and price), but I cannot find such info on TG.