Personally I recommend paying $1 more and buying from Amazon AU due to their better returns policy compared to the 3rd party seller.
Amazon AU seems to have price matched Harverynorman/Joycemayne on these two products. Since shipping is free from Amazon AU over $39 spend this is the better deal for these two items.
As I mentioned in my previous deal
"Some things I have learnt about the G735 headset since the last post are that with Playstation/consoles the volume on the headset for some reason is too low even at it's loudest setting. Also the 2.4G with USB dongle wireless reception is weak, it only keeps connection for a few metres and if you step out of your room the audio cuts out.
The first issue might be fixable with firmware so I would research that before buying if it's important. I don't think the second issue can be fixed with updates. Bluetooth reception is fine apparently."