I got one of these with the exact same specs off Amazon Warehouse for £500 during Black Friday in beautiful condition. Ive not used it loads and loads but have had zero issues with it. I did a clean install of Windows and it's been very impressive.
I had one of these - it was a fantastic laptop EXCEPT the screen had a blue tint. No matter how I adjusted it, the screen looked too cold. YMMV though. I sold it and moved to the HP ENVY 13.3" ba0553sa, which foregoes the convertible business (I never used my Envy as a tablet anyway) and has a slightly slower CPU (i5 10210U) but gains a much higher quality and brighter screen, a discrete nVidia MX350 GPU with 2GB dedicated GDDR5 and 500GB Intel Optane SSD. Its here if anyone is interested: https://www.currys.co.uk/gbuk/computing/laptops/laptops/hp-envy-13-3-laptop-intel-core-i5-512-gb-ssd-silver-10212903-pdt.html
I've had one since they were released and love it (fortunately got a decent discount and free 3 year warranty but had absolutely no need for it so far despite being my daily driver) - I don't think you can beat it for quality/performance/price/portability. I have historically heard rumours of issues with the hinges on the x360 so that may be one reason for "fixes" on top of usual open box returns; however that would definitely be noticeable almost immediately and certainly within the 1 year standard warranty I would have thought.
Good deal! One of the very few HP I like, good built quality, good specs.