I have one of these tablets. It’s pretty limited. Over $100 refurbished? I wouldn’t recommend it. It won’t do much more than basic web browsing. If you’re technically-minded, you can kind of get apps like Netflix to work on it, but it doesn’t even do those very well. I think it would be better to save up a bit more and get something better. Perhaps a Kindle Fire or something with Android 3+.
Probable a USPO APO issue w/ any lithium battery, if it happens to go by air and there is a small chance w/ a battery to somehow over heat which may cause a fire. A big problem, while in a cargo area that is not attended Vs. a fire in someones elec device that is w/ them.