Well if you’re a resident of Illinois you can’t go to another state and buy a gun from a licensed dealer. You’d have to have it shipped to an FFL in your state. Since this rule is in effect then the FFL in Illinois wouldn’t sell it to you.
The only way you can go to another state and get a gun is if it’s a private sale.
If you feel like keeping YouTube premium you could always vpn to another country and get it for stupid cheap. I believe I vpn’d to Thailand and pay $2 a month for it. You only need the vpn to set up the sub and then you’re good to go.