Thanks for the information.
Have you thought of getting a standing order set up at a string supplier so you do not have to keep ordering separate packets?
One of "Strings by Mail" and "Strings and Beyond" have a custom section where they set up a set of strings under the name of a customer who keeps ordering the same set, and then others can access the strings easily. I am not sure what the commercial benefits are, but at least you can easily order string sets if they will set up the custom set for you.