I've bought lots of stuff in addition to the digital calipers and other stuff I mentioned earlier, although not everything was on special offer, or brand new, for that matter: ZTE Axon 7 Mini (used), Sonos Play:1 (used), Sonos stand, tyre inflator, cat house and play stuff, Nato watch strap (James Bond style), and Ferrero Rocher chocolates.
Incidentally, I just had e-chat with an Amazon Customer Representative about being refunded the difference of something that dropped in price after I bought it at a higher price, and when I asked whether I could renew my Prime Membership for £59 instead of £79 seeing as Amazon France is offering Prime Membership for €59, I was informed I couldn't get it at that price just now, but that Amazon UK would be offering Prime Membership for £59 ahead of the Christmas Deals. Jayakumar didn't say when this would be, it might even be at the tail end of this week as Black Friday is a de facto pre-Christmas sales period, but I think it's safe to say it'll be being offered before Christmas for £59.