£40m pounds maximum.
He is a promising young talent but doesn't really stand out at the top of his age group. There are a lot of very talented and promising strikers in this 18-20 year old bracket (Ferguson, Sesko, Tel, Roque, Wahi, Moukoko, Hlozek), Hojlund isn't clearly at the top of that group in terms of talent by any means, and the biggest transfer fee paid for any of them has been for Roque for 40m euro plus add ons. Sesko, Tel, Hlozek all sold more for 20-30m euro range and Wahi is reportedly priced around the same.
That's just not true though is it? Granted he may not stand head and shoulders above all the people you mentioned, but he's hardly
Sesko may have had a better scoring season this season, but Hojlund's short time in the Austrian league alongside Sesko saw him have a much better goals to game ratio than him, as well as currently a much better goals to game ratio for their national teams, 6 in 21 for Sesko and 6 in 6 for Hojlund. Which is why he went for 17mill Euro's to Atalanta. Besides let's be honest, he's only gone for the price he has because he's transferred from one RB team to another.
Hlozek has less goals in more games for Leverkusen than Hojlund does for Atalanta this season, and a similar national team goals to games ratio as Sesko, so way less than Hojlund
Do I think he's any worse than Ferguson, Roque, Moukoko, Tel etc? No I don't but they are also younger and perhaps more generational than Hojlund, but that's only a perhaps, give it 2 years when they are the same age as Hojlund and they might be incredible or they might just be okay... regardless
Good luck getting Tel out of Bayern Munich for less than Hojlund
Good luck getting Ferguson out of Brighton for less than Hojlund
Good luck getting Moukoku out of Dortmund for less than Hojlund
Wahi has ridiculous controversies around him that aren't even worth bringing into the conversation about buying him I think personally.
I would argue Hojlund is relatively on the same field as all of them, as in none of them have truly proven anything yet but all have talent and skill that could see them develop into top strikers in the years to come, that is what Atalanta believe and why they obviously want a high price.