expired Bose QC30 Quiet Control Noise Cancelling Wireless Headphones $317 Delivered @ Avgreat eBay
Equal lowest price I can find from previous bargains. Seems to be a genuine 20% discount as they've been selling at $385 + delivery for a while.
Also available here for $320.30 from videopro if the original ones sell out, or for some reason you prefer videopro.
Claim to be a Bose authorised reseller. Aust tax invoice issued so you can claim TRS