Although I support (obviously?) to the principle of selling and buying second-hand or reconditioned products, I feel that you're overdoing it - tons, I'm tempted to say - in your communication on the theme of "we're super-cool because we're making rubbish to save the planet" (as if it were a question of saving the planet)... The e-mail I received to find out if I was satisfied with my purchase (in absolute terms, it seems to be fine) is edifying in this respect.
In reality, your approach differs very little from that of the various sellers of everything and above all anything (industrialists of all kinds, marketers, salesmen and other swindlers, who deserve nothing more than a slap in the face): you have to keep the machine running, keep the money flowing, so that the suicidal principle of economic growth continues as long as possible. Incidentally, the fact that a certain Bernard Arnault is a stakeholder in your "company" speaks volumes.
In short, while the purchases you can make from Back Market are clearly good deals in terms of both finance and quality, I frankly have the impression that when it comes to the responsible, moral aspect, you are draping yourself in a veil of very 'greenwashing' virtue.
So I think I'm going to dispense with your services and, even though I can't really afford to pay more (but it will save me from buying too many trifles), go back to buying second-hand, but face-to-face with a human being.
Perhaps you'll understand why I'm not sure I should say hello...
NB: As I haven't yet had a chance to try out my camera, which incidentally seems to work fine, my smileys (tsss) do not particularly reflect my opinion of the performance of the product I received. A product which, by the way, was presented as being in "very good condition" when I clicked to buy it, and not just in "good condition" as I read a little to the left of my screen, under the name of the camera...