I ordered a leather jacket in the Sainsburys 25% off sale, and it has arrived, and is fine. Not brilliant, but fine - on the positive side it doesn't look too cheap, on the negative it has quite irritating flappy lapels.
However, I'd previously tried on an All Saints jacket - the oversized one - and fell very much in love. Lovely leather, very much "me" in terms of how it looks. But it is £420 and the Sainsburys one is £74.50. - so 5 1/2 times as much, and the most I've ever paid for an item of clothing. On the other hand, if I wear it for many many years because its so lovely it would be worth it. Aargh....