Why so many headphones for sale with less than 10 hours of listening time?


I've been in the market for a new pair of headphones recently, but have noticed that an unusually high percentage for sale are classified as "mint with less than 10 hours of listening time".  What gives?  How could anyone possibly make an accurate assessment on something with less than 10 hours involved?  Audeze is one of the brands I'm considering, but it seems like this is the one that has the most for sale with little time involved.  Could it be a comfort thing?  Any insight would be appreciated.
sense63
I could easily avoid this topic but I do have a comment. If someone wants to purchase any piece of high-end audio equipment (at full price), then sell it after only 10 hours use, I'm happy to buy it from them at 50% (or less) of their original purchase price. That's the basis of this website. People are impulsive, and (sorry for the cliche) their loss is my gain. No one forces them to do it. Speaking of headphones, I purchased a pair of Stax 009's on this site for about half of retail. They were practically new and came with the wooden box, extension cord and cover. No complaints here! 
Personally, it gives me no pleasure of taking advantage of imbeciles, either impulsive or not. Those people need help not being ripped off.
I have asked myself the same question!  I recently purchased a LCD3 w/ "less then 10 hours" on them.  And I am absolutely loving them!  While I can't confirm the validity of the usage, I assume now that issuing that statement "less then 10 hours" also means "these are in great condition...I may have used them for 500 hours...but you would not be able to tell."


Watching out for ear fungus....