Do not trust this provider. I was quoted £162 to sell an iPhone XS. I posted it off in their box, leaving the protective silicone case, and added some padding as the phone was in very good condition.
The site stated "Every part of your device needs to be working as it did when it was new, (e.g. charging port still needs to work). It can have signs of use, but cannot have any chips, dents, or cracks." The phone met all these requirements.
The response I got after they had my phone was that they would only offer £100. I asked them to return it, they then offered £115. I still said no.
I wouldn't trust them. The phone was in very good condition going to them. Curious as to what I'll receive back... I'll update when returned to me.
For now, I RECOMMEND YOU DO NOT USE