Grace Ice & Water Shield
Grace Select 36 in. x 195 sq. ft. Roll Roofing Underlayment
It is 25 mils thick rather than 40 mils and is only 66 feet long rather than 75 feet, but it is less expensive.
https://www.amazon.com/Grace-Water-Shield-Roofing-Underlayment/dp/B000WI45BU $149 but out of stock
$186 online, free ship to home.
If you go to HomeDepot.com from United Airways then you earn mileage points...
A roll is 3 foot wide and 75 foot long (but you need to allow for overlap).