I need a simple non-member website to allow downloads of adult content.
 

A female friend of mine wants to set up a website to sell adult videos and pictures directly to her fans, so they can pay for them and download them.

No memberships, no affiliates, nothing complicated.

What is the best way to go about doing this?

Thank you.

WordPress with a shopping cart plugin, although you might have issues finding a cart that accepts a processor that allows adult download stuff.
Hope this helps a little