Calculated Products

In the variable/calculated Labor we get one standard fixed price and one variable price.

Would this be a good option to get both standard and calculated pricing so that for a product we have a fixed cost and price and can also add some percentage based calculated price. So in the end the final cost or price will be fixed amt + calculated amt.

And if this can be expanded as labor type panel to add multiple calculations to calculated price, this can help get freight / custom prices etc in to the product.