I have gotten really close with my objective (to create a super simple way for people to sell their dolls on a wp site using their own paypal buttons).
You can see the results here: http://ndandtbc.com/new/dolls-by-mindy/ads/my-2nd-ad/ (single post)
I am struggling with how to get the custom fields to display IN the post content... any ideas out there?
I have some other challenges with displaying things like the ads categories in a menu...
I've tried to find answers (for many hours) but I don't seem to be "getting it". Thanks in advance for any direction.