My understanding of refurbished DJI drones bought from dji themselves is that they are basically brand new. They are basically testing them, cleaning them up and repackaging them. It’s not like they are fixing one that was all busted to crap. I personally haven’t bought any but I know 2 people who took the plunge and they got great drones. I dont know if there are other placing selling refurbished dji drones, but personally I would only buy them from the official dji store. https://store.dji.com/refurbished
if you get one be sure to let us know how it works out!