An experience I had with a seller.

There are always two side of the coin. And I will be neutral in my response.

@mrdecibel 
If you stick your nose into someone else’s business you will, on occasion, be told to go eat schiit. This shouldn’t surprise you and or upset you. 
These are for sale ads of used audio equipment. Whatever the back story is, it isn’t going to cause physical harm, and you don’t know if the story is true or not. 
You should probably find better and more productive options to allocate your time to.
 

I sympathize with OP.  If sellers are using incorrect information, what he did was reasonable.  He gave the seller the benefit of the doubt that perhaps he had made an honest mistake and offered to help the seller from misleading customers.  This is all laudable.  The sellers response indicated that he had no interest in being honest with customers, and that is disturbing 

Agree with Mahler123.  I recently responded to a classified ad from a dealer, he was selling a 7 year old amp and had it graded as a 10. I simply said that a 7 y.o. piece should not be graded a 10.  His response :  " THEN WHY DONT YOU MAKE AN OFFER ! "   WTF?

About 6 years ago I started a complete system upgrade process. The component in question was an Ayre K-1xe preamplifier. My question was the manufacturing date and was it a factory Evolution series? Despite his high volume 100% feedback rate the serial numbers seemed off. I called Ayre and it was verified the unit was 6 years older than claimed and was not an original Evolution model. I immediately E-mailed him and never a response. My point is buying used gear is similar to playing Russian Roulette you have no idea of multiple owners where the unit has been stored or if any slight modifications were made. This proves to me that even  "respected sellers" can outright lie.