Looks like the price for the Seagate Expansion 10TB (STEB10000400) got adjusted today as it was circa $307 when I checked this morning. It's now better than the end of the last deal in June 2020 where it was hovering around $297, but keep in mind that this is fulfilled by Amazon US and hence the price will likely fluctuate on a day to day basis.
At $29.196 per TB for what is potentially a Seagate Barracuda Pro 7200rpm drive which is surprisingly rated as compatible for NAS use by Synology, this could be a great bargain way to fill your NAS! This is substantially cheaper than local bricks and mortar stock pricing which ranges from $375ish (JB Hifi - when I asked for a deal) to $448 (Harvey Norman weren't willing to budge from sticker price).
On a related note, Shopback/Cashrewards appears to still be tracking on Computing category devices so you may get 5% off!
Note this is not the cheapest it has been where it was once $275 but given the current market conditions, I think this is as good as it'll get for the time being. And don't worry you don't need to be kind to me.
EDIT 13/07/2020 - Shopback
Just got my Shopback of $13.27 making this net $278.69. Unfortunately I've already maxed out my monthly Suncorp Benefits discounted Amazon egift cards so couldn't get the further 3% off :(
Price has fallen to $285.55 (maybe combine with the $3 Cashrewards bonus on Amazon for even more cashback goodness?)
And kellyly has received an Seagate Exos X16 10TB 7200 RPM SATA 6Gb/s 3.5-Inch Enterprise Hard Drive (ST10000NM001G) inside their expansion drive.
My drive arrived today and I also got the ST10000NM001G-2MW103 drive. Looks like there is a bit of a lottery going on! And in case anyone is still asking, yes it does come with the AU plug (and interestingly, an AU consumer guarantee slip).
Given there is a new deal posted at the current lower price of $283.75, I will mark this deal as expired. Gotta love a strengthening AUD!