They gave me a value of $71 for my used Galaxy S7. I sent it in, and they claimed that it had too many scratches, and reduced the offer to $7. I refused the offer and they sent it back. When I received it back, there was not a single scratch on it. That didn't surprise me, because that phone was in a case the entire time that I owned it.
They were simply trying to lowball me in the hopes that I would just take the lower offer. The only reason I didn't give them one star was because they actually returned the phone without damaging it.
I will use another company from now on.