Guarantee A to Z (Except D)

I buy a fair amount of stuff on Amazon, and have done for a while.  If there's something I need and can afford, and I don't need to touch and see it before I buy, I often buy it there.   I don't tend to give it much thought - I've always had good experiences with Amazon and in the rare case of there being a problem, I have found their after-sales service to be excellent.

I recently gave a short concert, and recorded a video of it on my camera.  The only problem was, the memory chip was full after 30 minutes, so I lost a good 40% of the performance.  There was plenty of battery life left, so I thought I'd invest in chip upgrade.   I found some 1 terrabyte chips on Amazon and ordered one.

1 terrabyte - one million millon bytes, on a chip no bigger than a finger nail.  When I were a lad, a disk of just 300 million byte capacity was about 12 inches diameter and 8 inches high, heavy to lift up, and they fit inside a drive unit the size of a small fridge.  The guy who invented the tech that underpinned them worked for IBM, and he had to take his ideas to Japan, I think it was, before he found anyone prepared to try to make a product out of them.  It became, as we know, very successful and he was made an IBM Fellow for some years before he retired.  I cross paths with his daughter from time to time; she plays the flute and I have a CD by her.  But I digress.

So the chip arrives and doesn't work, and I'm going through the refund process.  The chip was sold through Amazon Marketplace, and to my surprise, I discover in the "small print" that the Amazon A-Z guarantee doesn't apply to "digital items", and specifically, not to wot I bought.  I'm not sure if that means digital items sold through Amazon Marketplace, or any digital item whatever the source.  I'm still going through the refund process so I don't know yet if I've been ripped off or not.

So, whatever, caveat emptor, as always.  *sigh*

UPDATE 1 May 2019   Refund received.  Cool.