Starting with Sytist 0.7.6, you can now feature products from a store section in your photo price lists.
To do so, when viewing a price list in the admin, click Create Product Group and select the option"I will be adding items from a store section".
Then you will select which section you want to add product from.
Once you add the items, you can remove any items you don't want listed.
Now when your customers are viewing photos, they can click that product group to view those products.
And when they click on a product, they can view it without even leaving the page.