May as well get a nice play and charge to go with that controller you just picked up. Not a massive saving, but still a saving.
Pretty straight forward. Online price is $24, you get $6 back through the 20% cash back offer https://www.msxboxaccessories.com.au/ and you have a grand total of $18 for your play and charge kit.
For comparison:
JBHifi - $27 ($21 after cash back) http://www.jbhifionline.com.au/game/xbox-360/xbox-360-genuin…
Ozgameshop - $23 http://www.ozgameshop.com/xbox-360-accessories/elite-officia…
I just use LSD Rechargeables they have lasted longer than my charge and play kit ever did.