Just received a text message so will try and get more details and add it later.
Could be worth signing up for the $20 voucher online (or instore) and stacking the discounts (I think you can do this). I'm a bit confused about that $20 voucher. when I signed up instore they told me I ahve to buy somethening first then they will activate the voucher for my next visit but when I signed up online it indicated to me that I can use it straight away. Either way it should be a good weekend to signup and use the voucher.
+$10 postage to buy online Not included in the 20$ voucher ( for me anyway)