Belkin Gold Series 8-Way (2m Cord) + TEL + AV Power Board Surge Protector - $51
Belkin Conserve Switch AV 8 Way Surge Protector Power Board with Wireless Remote - $62
+ a few more Belkin Surge Protector models
Part of the eBay 20% off tech deal
I believe this is the cheapest it has been. (subject to correction by fellow ozbargainers) This is almost the cheapest, as pointed out by @Lukian (https://www.ozbargain.com.au/node/47306)
Bought one last year for $64.50. Not much of a price drop, but you are correct as far as I know.
For the money, this is one of highest energy absorbing surge protectors you can buy (2700 Joules).
The only better deal would have been this higher-end Belkin Surge Protector/Power Filter deal from last year (4720 Joules/123,000 Amps), which I'm still kicking myself for not jumping on.