Even if i sell it around here, nobody will buy it.
On a serious note:
Well, that depends on each of us. Someone will never ever sell his possesion unless in an extreme case. While someone will sell his posssesion if it makes a slight profit.
What i usually do is sit down and take a look at the thing i wanna sell. Do i want to keep it? The first yes / no flash in my mind will decide it.
But hell, $20 to $199 is one offer that even i tempted to make profit too...