Received an email from TechRadar regarding a promo for Prime Members only. $438 for the 700's in all colours but in separate product pages. Discounted price shown at checkout. Cheapest I've seen so far. Promo ends on 22 March. Enjoy!
T&C's from Amazon:
Terms and Conditions
These terms and conditions apply to the offer whereby customers who have an active membership of Amazon Prime and purchase Bose Noise-Cancelling Headphones 700 (B07Q9MJKBV, B07Q4QK379, B07X5F81JS) as displayed for that offer on amazon.com.au (“Qualifying Item”), will receive set price of $438, the Qualifying Items (“Offer”). Offer ends at 11:59 PM (AEDT) on March 22, 2020. The Offer only applies to items sold by Amazon AU on Amazon.com.au. Offers do not apply to purchases made from third-party sellers on Amazon.com.au even if fulfilled by Amazon AU. If you do not add any Qualifying Items to your Shopping Cart, the Offer will not apply. If you cancel or return any of your Qualifying Items, you will only be refunded the price paid for those Qualifying Items. This Offer cannot be used in conjunction with any other offer. Offers cannot be used on pre-existing orders. Offer does not apply to orders placed with 1-Click. This Offer is subject to availability while stock lasts and may be withdrawn or amended without notice. This Offer is not redeemable for cash. This Offer is limited to the purchase of a maximum of two orders per customer. This Offer is non-transferable and may not be resold. Amazon.com.au’s Conditions of Use and Sale apply. Delivery will be applied to each item in accordance with Amazon AU's standard delivery rates and policies. The 10% discount off Qualifying Items will only be applied at checkout. The promotion is valid for a limited time only. The promotion is valid for Prime Members only. Amazon reserves the right to cancel it at any time.