I don't think you need to pay 'silly money' to get a striker in.
Yes getting a morata or somebody like that would cost large sums of money, but Everton have already got a number of players with prem experience in this transfer window, Sig, Pickford, Keane, they all look like they'll be worth their fee.
Now's the time to go for a punt for the striker, and if he's successful he'll be worth much more. Look how Dortmund got Aubameyang, Dembele, or Monaco when they got James and Bakoyoko, Mbappe etc, there's decent quality for cheap, you just can't fill out your whole team with them in the prem.