The complaints are there to read on the web so the most common complaints are about the price you get or a dispute over phone condition which drops the price.
If you don't mind the low price you get, why not?
Has anybody of you have tried instant mobile selling platforms for selling your old phone. I have been looking for various platforms to sell my old samsung grand. Do you think that sites like Instacash is a good option.
Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic