There are even websites that list the resort fees, such as https://www.lasvegasjaunt.com/las-vegas-resort-fees-2018-guide/ https://www.lasvegasjaunt.com/las-veg

There are even websites that list the resort fees, such as https://www.lasvegasjaunt.com/las-vegas-resort-fees-2018-guide/ https://www.lasvegasjaunt.com/las-vegas-resort-fees-2018-gui... It's also possible to scrape them from other travel search sites.