Gecko were the highest paying company on comparemymobile.com for my phone, they offered £240 for a phone on the basis that it was in working condition. The first problem was that the ‘free postage’ offered does not include tracking or insurance so I had to pay an additional £7 to post the phone. After receiving the phone they then sent a revised offer of £160 because the phone apparently failed a battery health check and had dents and scratches (there are no dents on the phone). I had the battery checked by Apple a month ago and they said there were no issues. Next time I won’t just go for the highest price. I’ll check which supplier has got the most good reviews.