The bulk emailer now has a couple of product layouts which will quickly allow you to add product information, pricing and links to your product.
You can populate the snippet with your product information via the IMPORT PRODUCT button when you hover over the snippet.
This will launch the Product Wizard where you can choose a product, the default info in the snippet with be replaced with your photo, title description etc.
You can choose to have the button go to the product, or straight to add to cart.
Once imported the information will not change if you change your product information later.