I offer courses on my website as an affiliate.
Sometimes the site for which I'm an affiliate offers a site-wide promotion, in which case every course's price would drop to the same amount. Setting these changes manually for 1-200 courses will be extremely challenging - mainly to my nerves.
How could I somehow make a setting - any form of setting - that I can change manually for all the courses at once, so that if I set it, it crosses out the old price and displays the discounted price as well, for all the courses, at once?
The individual discounts are set in a parent Discount post type. If there is a way to set the parents of all posts at once, that could work in one way because all the discount prices are the same, but it would not work backwards because all the regular prices (and other discounts applied, which would be overwritten by the site-wide promo) are different.