Dynamic "Add to Cart" PayPal buttons for selling Prints on Website

Not sure if this is the best place to ask, but thought I'd give it a try.

I'm potentially taking on a site for a friend.

She has a Gallery of Images that she has taken and would like to 开发者_如何学Gosell prints of these on her web site at different sizes (A4, A3) using PayPal.

It's currently powered by Joomla.

Can someone explain how I would do this using PayPal?

I've only ever created specific buttons for items in PayPal.

Many thanks for any pointers.

I would recommend to go with a real e-commerce solution, i.e. some kind of shop where the user can choose a version of a product (in your case the size of the image).

You will some more work to get it setup the way you like, but the advantage is that running/updating/scaling the product range will only require minimum effort.

My advise is to go with a e-commerce extension that is not too powerful and complicated, I can recommend for example the SimpleCaddy. But there are of course other options.