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Received this via email, apparently it's not on their website yet??
Buy 2 get 3rd piece free from 15 May till 23 May. Terms and conditions on website (but pretty standard, i.e. cheapest piece free, single transaction, not redeemable for cash)
Sign up for VIP card online, get $10 free (VIP benefits on website, includes 20% off on your birthday, etc)
Existing VIP members can update their details and receive 20% off.