Fun trivia about the Xbox controller is that their design is heavily influenced by Sega’s. The Xbox controller has the same face button layout as the Dreamcast’s. And if you compare the Duke (original fat) controller to a Saturn/Genesis/Mega Drive 6-button controller, you can think of those black and white buttons as the former C and Z buttons.
Some consider the OG Xbox as a successor to the Dreamcast.
I suspect this holds true to any base x numbering where you take the highest valued digit and multiply it by any number. Try it with base 2 (1), 4 (3), 16 (F) or whatever.
https://www.blu-ray.com/deals/ is a great place to view deals on movies and shows. Most of them are sold on Amazon though. https://grindhousevideo.com/ is another store I’ve bought from. They seem to have a decent selection of more obscure titles.