first project here using JS

i used js to change the Price and Pageviews, but i couldn't figure out why when the page loads i cant change it only if i check the checkbox. only after i touch the range thumb the checkbox toggle works.

so i used a probably bad practice to change it only when reloading, but i would like to know what is the best way to do that.

if you have more comments on the code let me know. thanks!