The cheapest Dell Ultrasharp branded Monitor I can find is a 1080@120, 24" unit at Best Buy. Note that this thing costs $239.99 at the time of commenting. This is only a monitor -
computer and peripherals to use it sold separately. You'll likely end up spending more than $499 making this thing usable. And you can't even take it anywhere once you've done all that!
How about we just look at tablets, then?
Lenovo Tab M11 is $179 and has a 90hz panel, which is nice! Except that it is a significantly larger device, and has a Helio G88 powering it. Also, hope you like Android 13 cause that's likely all you're gonna be seeing on it! That model has a lot in common with the more expensive Galaxy Tab A9+, but Samsung is a bit better when it comes to software at least.
You'll note I had to compare to larger tablets. That's because there's basically only one other competitor in the same size class as the Mini - the Kindle Fire 7. It's $80. The price tells you everything you need to know about it, you really do get what you pay for.
All this to say that, for $499, the iPad Mini 7 is a surprisingly good deal. iPhone 14 and 14+ are more expensive for a smaller screen, inferior chipset, and shorter battery life. Plus, no Apple Intelligence. I guess you get cell with those, so we can't be too harsh.