Where could I sell newly created Wordpress sites and how do I price them? I'd like to flip websites and need to know what to charge.

These would be starter sites with a dozen original articles on the subject and some additional visual interest like pictures and videos. Any pros/cons to this idea? Really they would be a springboard to allow someone to hit the ground running.

I'd also appreciate advice on whether it's better to create them and not sell right away. I'd give them enough time to be indexed on Google before I would of course but is there any benefit in holding them for longer?

I wondered if there were sites that are devoted to this or at least have a section solely for that purpose. Thanks!