Where can I buy a PocketBook Basic 4 (or similar)?

So here is the dilemma.

I would like a reader that does not have wireless capabilities (as in the hardware is not present, a software toggle will not do). My job requires that any electronics we bring must not have wireless capability. Essentially, I discovered that the only reader that meets this criteria (that has been made this decade) is the PocketBook Basic 4. The issue is, I cannot find it anywhere used or new. I am in the United States, so maybe that is why? Any suggestions on where to get this device or possibly suggestions on where I can find something similar? Removable storage is acceptable.

Thanks for the help!