I've had the phone for 24 hours and I am very happy with it, so far. I've found nothing to complain about with the product, or the customer service. This is the third item I've purchased from backmarket.fr (I'm typing this on my Dell Latitude 5480) and never had cause for complaint.
Four stars? There was no charger, just a cable, despite backmarket stating there was one. Fortunately, my old Moto G7 Power charger will work with the Edge. Despite paying extra for express 2-day delivery, UPS made a total cock-up of their part and it took four days and virtually no information from them before it finally arrived. When it eventually did, despite their website insisting a signature was required, it was left in my mailbox. Had I known that was how it would arrive I would not have wasted three frustrating days confined to the house. UPS.fr has lost another customer.