Fares are strictly limited and only available on selected routes and flights for Internet bookings only. Bookings can be made between 1pm – 2pm (EDST) daily (or until sold out if earlier).
Might be a bit like those stock-take sales the department stores used to have. Remember when only a lucky few made it in the doors and up the stairs fast enough to claim the handful of white goods that were at the rediculously low advertised prices?
I thought they brought in legislation to stop this kind of thing.