MPB reliable for drones?

[Playingwithdust]

Hi all.

I was browsing mpb (a German used photo/video kit site), and I saw they do DJI drones. I saw the Mavic 4 Pro there substantially cheaper ('Like New' with 0 battery charges): with that in mind, are they reliable in terms of selling drones? Are there issues with drones still being bound to previous owners?

Thanks!