Note that Xiaomi today is very hostile to bootloader unlocking -- to get unlock code you need to win in daily first come, first served "lottery" (they limit total number of unlocked devices per day). After a second or two passes you're already too late for the day.

Thank you for letting me know, the plan right now is to try for about a week or 2 and then give up and return the tablet if I can't.

Which is a damn shame because not too many options exist with a headphone jack and a Snapdragon processor. I'm in an environment where Bluetooth is unreliable for a good chunk of my day.

The only other tablet that fits my needs is a gosh darn Surface which is like 1000$.

No wonder there are numerous dubious sites doing it for you ... this breeds abuse.