Hobbit and I anda couple buds are doing Wisconsin this summer
We are doing Erin Hills which will exceed your $300.
Also the 5 Sand Valley courses which I believe is less than $300 and 1/2 price for your 2nd round of the day
And the 2 courses at Lawsonia which are $125 ish.
BTW Whistling Straits is over $600 green fee now plus caddies fee and gratuity. We wanted to but not at that price and Hobbit has been there a couple times already
There are a few other courses tho which are cheaper