You're merely experiencing the misfortune of missing the last dip, just over 6 months ago, in the price per GB of HDD storage. The price of the WD
6TB Green has shot up some £14.67 since the end of September last year (Scan Computers pricing - an upward trend repeated by *all* vendors).
I'm lucky in that, despite the used capacity percentage figures of the four drives in my NAS box now showing as 97, 98, 99 and 100, I've still got a few hundred GB of spare capacity and the means to half the size of the mpeg2 files still comprising the bulk of the stored data faster than I'm burning it up with fresh freeview recordings. That means I can sit it out a lot longer than the HDD supply chain can (IOW, the suppliers will be the first to blink *this* time). :-)
Amazon's main page for a product is not always the cheapest price on Amazon.
Other vendors may offer a cheaper price but get bumped off the main page for poor customer service, slow fulfillment, etc but it can seem random. At one point Amazon even bumped it's own stock from the main page in favour of another vendor.
I tried to track the Amazon price for a product but didn't realise different vendors of the same product were appearing on the main page at different times.
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