The $50 would be decent, but my experience with the Trade Up program is that it's a complete rip off. One is better off selling his or her phone individually and getting money than selling it to a big mobile company who has absolutely no incentive to give you reasonable compensation.
i've only used the program twice, doing all the paperwork for customers. But both times went fine. the quote and extra 50 check was mailed in 3 weeks or so.
Posted from my CrackBerry at wapforums.crackberry.com
I am sure a few have had success with FlipSwap, but for the most part, they are a SCAM. My brother and I both sent Blackberry phones in within a few weeks of each other that were in excellent condition and they gave me 30% of what they quoted and 25% of what they quoted to my bro. The phones were only a few months old because we changed carriers for our entire company within a few months of getting our 2 phones. Near new condition and no reason whatsoever to reduce the value. Search the web and you will see that hundreds of others have been scammed as well. Wish I would have researched. Its not the $50+ I am upset about, its the scam I hate.