Avoid that one. There is a reason why it's so cheap on ebay.
Sure, it's a Thunderbolt 3 dock, but the two displayport ports aren't using thuderbolt 3. The are actually connected via USB displaylink.
Uh, yes. Avoid that one. We have ZBooks and these Docks at work and we all have all kind of troubles. But the funny thing is, we all have different troubles. Mostly the keyboard or one or two monitors does not work ..
What are the odds one will work with a MacBook Pro?