Why is everyone selling the same couch?

I'm on a mad hunt for a living room sofa ever since I had to give mine up to move into a corner apartment it didn't fit into...  So I'm on craigslist every five minutes looking them up.  And this is what I KEEP finding!

For $175

$150

$200

$170

$700 (as part of a set.. but still, seriously?)

And, for $275, the original ad that made me WANT the couch.  

Here's the best part..

yup.  That's the same couch.  At Big Lots right now, for $330.