As above.
Some breakers will strip out the door completely, even before advertising it. Many don't like to ship complete doors.
If you want a complete one with motor, glass, etc. then you may have to make some calls. With luck you can find a local breaker and collect it (fits in a Panda OK!). Then you get what you paid for without arguments.
Then its just hinges and the electrics connector, which is a bit fiddly, but much less hassle than trying to re-fit everything inside the door. Requires taking off an interior plastic panel (and the bonnet release if passenger side) and fiddling an odd-shaped plug through an odder shaped plastic bung. Makes more sense when you can see it.
Can all be done solo, but much easier with two people.