The majority of the products, especially the scripts have more than adequate written instructions. When read carefully, to be understood.
Problem is that you have to purchase it before getting the instructions, and many people are still very unsure about using scripts (or purchasing them). I am still surprised to hear people say “scripts are above my head”, or “but I don’t know how to use scripts”. And videos would also be to show the versatility of the script and the end result.
Believe it or not, someone had asked me what to do with a window (from the Wooden Window script) once done. He had NO CLUE how to use it.