Adding buy buttons to gallery images

I want to put some sort of link on buy buttons associated with some of the images in my art gallery pages. It should take customers to a check out area for credit card or Paypal. I want some of the items to be available for purchase, but not all of them. I guess I could use the store template, but I don't want everything available for sale. And I'm not sure what the store template does anyway. I have that page on the site I'm building and when you preview the page and click on an item to buy it it just takes you to the Xara site? Is there some widget I need attached to the image placeholder or code inserted, etc.? Not sure how this works and I can't find anything in the help file.

I searched on line and found that in Xara Web Designer Premium v11 they say there is the following in the design gallery online, but I'm not seeing it from v15
"E-commerce - Page Elements & Widgets > E-commerce (widgets) - including PayPal and Amazon. (Pro and Web Designer Premium only)"

Follow the instructions here
https://developer.paypal.com/docs/cl...uy_now_step_1/
Make a rectangle the same size and position as the button should be then use the rectangle as a placeholder(body) and paste the button code from Paypal.

Thanks very much, James

I also started looking at XT-CMS but am not sure I would need that much control, well see. I haven't yet looked into how to set up a blog using Xara and it also doesn't have much info in the help file