Mitre 10 do a daylight range of powersaving lamps, the Osram ones are best.
Check the end of the box to make sure it says 6500K as the colour temperature.
You won't get any thing that you class a 'cheap' from the electrical wholesalers in the two foot range, it is not a common size as far as their purchasing goes, and for the base batten fitting alone you are probably looking at the thick end of seventy dollars trade, that is without lamps, reflector or wiring.