GoPro's Hero4 Session is a great little action camera: it's waterproof, captures high quality video, and it's ridiculously simple to use. There's literally one button to turn it on and start shooting. Sound good? OK. You can buy one for a ridiculously cheap price on eBay at the moment.
The Good Guys has the original Session for $295, which is a pretty reasonable price for what is a great little camera -- all of the gun-camera footage from our Zedtown adventure was captured on a Hero4 Session, and although there's a Hero5 Session on the way it'll cost a little bit more at $469.
20 per cent off with the currently-running 'CGOOD20' promo on eBay gets that Good Guys price down to $235, as long as you select click and collect pickup from any Good Guys store. There's also a huge range of other kit available with that 20 per cent off coupon, too, so go nuts. [eBay]