The Turtle skin can be used to sell your photos or products. To use this option you'll need to hold a Pro license or a Power storage account with jAlbum. Although the payment is routed through Paypal, your customers don't need to be signed up with paypal, they can simply use their credit cards. Follow the steps to create an album with shopping cart, and peek at what your customers see during the shopping process.
You need to start by creating the album you wan to add a shopping cart to. Please have a look at the tutorial below if you need help with this.