I can no longer judge what any given player is "worth" given market inflation and I don't see how any of us can have a real opinion about particular numbers.
So I'll make a distinction between nominal money, modest money, real money, and absurd money.
I have no problem spending nominal money on whoever. Norgaard didn't play but he was still a fine acquisition.
Tzolis is a good example of modest money. Madueke was on the line between modest and real and that's what makes the fee we paid for him reasonably controversial.
I have no problem spending absurd money on genuinely elite players. Fine for Vini. Not for Morgan Rogers.
Personally I have no problem spending real money on potential (let's say, 23 and under) but YMMV. I really wanted Bouaddi and still think Kroupi, injured or not, should be top of our attacker list.
And I think it makes sense to spend real money on players who will start for us, even if only for 2-3 years. No problem with Bruno.
What I don't want for us to do is to spend real money on players over 23 who are not going to start when everyone is healthy such as Konsa.
And I wouldn't spend a dime on a POS like Romero. Despicable.