3 1st round picks is insane. Jost is a good player on his own.
It also takes +3 to go from 90 to 91. So it's technically a +9 difference
You can't look at it that way. I'm not going to start evaluating trades between an 89-87 and say it's a +4 difference. Or an 85 and 80 and start looking at MPU's rather than their actual overall.
Any player in the 90 is already elite. Perhaps Laine is top 3 in this league however that doesn't require that much of an overpayment when you're giving back an already elite player at the same age and cheaper salary.