Product Level is heavily based on Product Matrix but it uses numbers instead of text in the Shipping Group and it uses the Highest Number in the cart as a Priority-based shipping rule to define the shipping cost.
For example, you have different tiers of products with varying costs to ship, with higher tier products in a higher tier shipping bracket. If you have a bunch of products in the cart each from various tiers, the highest tier will define the shipping price. It has the added benefit of being able to define these rules for a variety of filtering rules - like Product Matrix.
Head over to our landing page for Product Level today !