Lol:
https://i.imgur.com/fuKjuiC.pngAnd though this might just be a standard disclaimer, why would I go with a product with some code with this warning:
WARNING: While functional, this is currently alpha-quality software and could have bugs or other issues that might cause you to lose your coins. Use at your own risk!
...when for about the same price I could buy a Trezor or Ledger?
On a positive note, it is very small and doesn't look like a standard HW wallet. On the other hand, from the pictures it looks rather cheaply-made. I'm not at all familiar with M5Stack, so I could be wrong. Am I wrong?
is that the m5stack website? depending where you are, try digikey, mouser, farnell, aliexpress, etc. they are almost always in stock somewhere.