Adding a product in Cartloom would start like this. You set all product details, Cartloom can handle selling just about anything. The "Page" tab is where you drag and drop in images, and fill out a large description for the product page - should you want to embed your product into a website.
And here's a screenshot of the Snippets tab, Cartloom provides many ways to offer your products for sale. Notice Drag to Stacks, this is special integration into Stacks. We've worked very hard to get full product pages literally, drag, drop, done.