There's some pretty cheap 10.1 Androids on Alixpress.
Got one a few weeks ago, 4 GB 64 GB 8 core. Android 6 And it's got dual sim / 4G as well.
Theres's 2 versions of this tablet, Same specs, but ones got Android 6, and 4G the other Android 7, and 3G
Was about $144 NZ
If I want to copy files from it to the PC I just use Bluetooth. Since both the tablet and PC have BT