Here is the HTML code for one of my custom templates:
http://www.practiceboard.com/?2086183
The tags (which you can see in the HTML code) are as follows:
1. Title = [#TITLE]
2. Description = [#DESCRIPTION]
3. Payment & Shipping or sometimes called Terms Of Service = [#SHIPPINGPAYMENT]
The code for the image tags is as follows (and, as you can see, also inserted into the template code):
http://www.practiceboard.com/?2086190
When we create an ad using the other service there is a line for the auction title that we fill in and then the description and also the payment & shipping terms have their own boxes where we type the info in. The images are chosen much like they appear to be here. The description box also looks pretty similar but with our other service there is a box similar to the description box for the payment & shipping terms on the create an ad page. Once these boxes are filled in with the info, the title line has been filled in and the images have been chosen we then save the ad. When the ad is launched or previewed the tags automatically pull the information from these areas on the create an ad page and fill it in. This creates the finished ad.
Hope this makes sense.
Jackie
Edited To Add: When we create our ads using our current service there is also a place within the create an ad page to choose which template we want to use. Like I said before, I'm not exactly sure how many I have but there are over 100 of them.