All the prices are local to me of course, the availability might be different for you. Here’s a good page with info on many thin clients: https://www.parkytowers.me.uk/
A lot of these are available refurbished from enterprise sources so almost always in good conditions
https://www.servethehome.com/introducing-project-tinyminimic...
Pretty happy with it so far. Runs a few cron jobs to generate some static sites, a local WordPress instance and pi-hole.
8gb pi 5 £76.80
27W PSU £11.60
case? - £9.60
SATA hat - £29.00
256GB SSD - £24 (reputable brand)
Total is £151,or roughly €181> ($449 to start; $729 as tested)
So you bought it used for about one fourth the price. A pi 5 for one fourth its current price also sounds like a great value.
In the same vein, why do you prefer or not prefer your mini pc over some random, new n100 mini pc? I would argue that neither is strictly better and that reducing matters to "X is bad, period" is oversimplifying.
And I prefer a refurbished thin client over a new n100 because for my application, the thin client I need is much cheaper than any n100 PC I could find.
The parent comment already mentioned the (to me) most important point:
> x86 means you can install whatever you want
I run about 20 different containers at the moment and run TVheadend bare metal with 3 DVB-T2 tuners.
Both machine used USB3 - Sata enclosures for extra storage. Work greats. The old Dell machine even did transcoding in JellyFin for 1080p content, which was not expected given how crap the cpu is in it. Everything ran fast and stable.
Check out Parky Towers for in-depth info on many different thin clients.