I'd prefer spending $300 on something like a refurbished Thinkpad for myself, but realize that might not serve my family's desires.
I would consider a 500-600€ device with a decent screen, 8 GB and a (swappable?) disk to try ChromeOS out, I feel I'd be wasting money if I were to get a sub-300 one
When people talk about price being an advantage for Chromebooks, they mean at the low end, where the OS can operate well on hardware that Windows doesn't tolerate, and where the windows license fees become a significant part of the selling price.
Try a comparison of devices around $300US, that's the sweet spot for ChromeOS.
The only thing close is Windows Search Indexer, which is a buggy piece of junk that spins CPU all day doing nothing
I would buy any of them with ChromeOS at that price (I'm interested from a developer point of view, especially for the Android subsystem)
That's leaps over any Chromebook I can find, and those are real laptops that can do any workflow.
These days it's upper middle for the U.S. I would say. For example the new top-of-the-line Dell consumer laptop, the XPS 13, starts at under $1000 (900€). When I got an XPS nearly a decade ago, it was a model they had at a considerable discount (as I recall it was an overstock situation or something) and it still cost me $1350.
As far as I can tell, low-end, mid-end, and high-end laptops are not only more powerful than the laptops of 10 years ago, they're also considerably cheaper at each level. I can't say for ultra-high-end laptops, I'm sure you still can spend $2500 on a laptop if you want, but even the MacBook Pro starts at only $1300 these days.
So let's look at the actual prices: In the US XPS 13 9380 starts at i7, 8GB RAM, 256GB SSD for $949 listed price. In Europe the same configuration starts at around 1200€, but they are also lower configurations (i3, 4GB RAM, 128GB SSD) priced at €949, just so that they can list a lower "starting" price, even though that configuration is almost unusable.