Go to  the website product review au and see which retailers to trust.

Avoid companys who use computers to measure you and then try and sell you $150 latex pillows.

I found the cheapest and best was from Harvey norman, as much as I dislike the owner they have good deals and Sleepmaker is Australian made.

Also their delivery drivers have two deliverymen and carried it sraight into the room.

I went for a medium with a latex pillow top.

Make sure you get the better spring setup 'miracoil'

Latex gets hot in summer, so if you do not have bedroom cooling  think about it.