Checking their trade-in descriptions, the offer for an iPhone seemed competitive and reassurance that free return would be possible. Excellent - minimal light signs of use on casing/housing and no damage to screen.
Upon receiving the phone, they offered £40 less due to damage to rear and casing, with no evidence to back this up. I stated I had photos before sending the device and it was always in a case - an increased offer of 20 less than original was still not right!
Received the phone and it has a fresh scratch on the rear glass!!