As an example, I give you "template b", although many other templates are available from the same seller...
https://www.ebay.co.uk/itm/bs-template-b/153237956986?hash=item23adb1a97a:g:KbMAAOSwxyJbhHTT
Seller seems to use the same EAN for all of his "templates", a, b, c, etc... that EAN brings up a boring budget P bass starter kit... it must be more interesting than that!?
If people are buying these things, I reckon they must be privy to some sort of code that I'm not aware of...