I bought one (P4) from Newegg about a month ago at $799 (refurb). It looks Brand New, not a scratch on the outside. Controller looks untouched.
Both controller and AC had the latest firmware. I have about 4 hours flight time and have had no problem so far.
I believe, DJI is off loading their overstock P4's and reselling them as a Refurb, but by the looks and how it operates, it is FLAWLESS.
I bought my P4 refurb directly from DJI about a month ago for $799. It arrived looking brand new! If you are looking for a great drone at a great price, jump on it