Earlier quoted context omitted.
You're comparing a $1254-minimum laptop[0] with a $599-minimum laptop[1] and asserting that the one that's twice as expensive is nicer. I'd expect it to be. In fact, I'd demand it. (I'm ignoring the "old model, found cheaply" bit because that's entirely irrelevant. You can find old Macs on sale around, too, but that doesn't mean you can reasonably compare them to the MSRP of a brand new device.) [0] https://www.lenov…
I don't see why comparing prices between used and new options is unreasonable in this case. If I want a machine to do XYZ (without the stipulation that it be new ), then an older model might well be better value. "In $CURRENT_YEAR, how can I get X processing power?" Of course, old Macs should factor into that too. Also, it's a different story if I do want something brand new.
If we want to compare new vs used, then how much would you have to spend to buy a brand new PC laptop as powerful as last year’s MacBook Pro?