I agree with this as well.
I agree - being able to choose one folder or album and this being your for sale items would be great.
I am looking for this same exact functionality. The Paypal Shopping Cart addon just unilaterally adds an ability to buy all photos. i only want one album for sale.
As in the subject - I'm looking to have only select images for sale. Without setting up a complete new gallery, I hope.
What I'm thinking of is a folder with items for sale only in this folder.
Our maybe a menu link that will group only items that are for sale. i.e. portfolio section, store section.
Any recommendations would be helpful.