These are the only 2 options to choose from:
Seagate Storage Expansion Card for Xbox Series X|S
WD_BLACK C50 Storage Expansion Card for Xbox from WD_BLACK
And to add my 2 cents regarding your question a/b controllers and physical games costing as much as digitals games — it's b/c they can...
The so-called $30 battery replacement for iPhone 6s's that Apple offered as a piecemeal due to their shoehorned batterygate controversy caused my phone to eventually die off w/in a year and a half from the battery replacement 🙄🤷🏽♂.
Damn, that shit is so f*cking sleek. That slab of glass is such a work of art 😁. I'm so tempted to buy one, but knowing me, it will remain untouched for a while since there's only so much time in the day where I get a chance to tinker and test out new electronics I receive.