BBTronics is not like every other site where you sell your old electronics. I've used Chegg before and was completely satisfied with what I got back. However, BBTronics takes many more types of electronics and offers you more money for them. However, there is a $50 minimum value in order to get a sticker to send your item in free. Otherwise they will pay you the difference later. I felt like that was what was so great about Chegg- it was NO hassle.
BB Tronics presents to you a one stop place to sell all of your old electronics. They make everything come across very reputable, and give back fair prices on old electronics. I found a problem with the iPhones however, where the only ones they offered to take back were for the 4S or lower. Now that we're two generations beyond that, it becomes a big deal. You get your money for the item in your Paypal account in a matter of days, so they do have good service, I just don't think they offer you the ability to sell back as much as they think they do