I'm not sure they're odd? They're using a 3D printer. If the CAD design is open, you could even assemble your own repair parts.
I can highly recommend the Azeron Cyro [1] (cannot comment on their other products, but they look interesting). It is partly 3D printed, but also repairable and mod-able. It is the only vertical mouse I am aware of, with a modest amount of keys (15 + scroll wheel + analog thumbstick). I say keys since, well, in software they're recognized as such. You can also make it a Bluetooth mouse (I use USB2BT+), though obviously you suffer a bit from latency.
I can highly recommend the Azeron Cyro [1] (cannot comment on their other products, but they look interesting). It is partly 3D printed, but also repairable and mod-able. It is the only vertical mouse I am aware of, with a modest amount of keys (15 + scroll wheel + analog thumbstick). I say keys since, well, in software they're recognized as such. You can also make it a Bluetooth mouse (I use USB2BT+), though obviously you suffer a bit from latency.
[1] https://azeron.com/collections/cyro