How many seats per sector?
My very rough calculations give no more than 4 seats per sector (maximum) on offer; so 4 seats at 5 cents and the others a normal prices. Very clever.
Not so clever, not setting up their system to cope and not a very clever way of making people search for the flights; which in itself made the system slower.
The other minor problem they 'created' was anyone getting a single one way fare has just turned around and purchase a Tiger return leg; where it's an option. So in effect these 5 cents fares may have helped Tiger, not pulled the wind out of their sails (sales). Well that's what happened in my family.