Totally sounds like a bait-n-switch scheme. They offer great value and get people to send in their phone. Then they find some reason to reduce their offer, legit or otherwise. With a 5-day auto-accept policy, probably a good number of people get shafted. And that's probably how they make their money - break-even on the hard liners who insist on full value and make a killing on those too lazy or indifferent to challenge them.