Time trials of production processes along with other gauged data are entered as basic portions of calculations for product components to update costs and eventual pricing. So, if components go up in price, so goes any product dependent upon the component.
A single product is usually calculated via a certain recipe using certain units of measure. A line item can use additional factors, size and qty for example, which determine the volumes of components necessary to create the product. The units of measure, say linear feet, will be used as opposed to optionally use square feet. If the product is to use square feet for some reason, a separate product would be created using a different name and the two would show in a product list. (I think I understand your question correctly.)
Although a typical
sign print product might be simply made of sticky-back vinyl, a product list available to a CSR would show many options because a decision is required to use a certain type of vinyl from a certain width of roll stock, listed separately of course. The list is alphanumeric dependent for sorting and grouping, thus a strict naming convention is necessary. So, let's say 3 roll widths are available, but there is also an option for lamination. That begets 6 products in the list for a single, simple print product. Additional vinyl types and laminate types and substrate types and turnaround times and more cause the product list to grow immensely. Again, strict names and the
computer system help parse such lists greatly.