Klipsch Cornwall IV

Personally, I have sold, electronics and a pair of ZU's on ebay.  I list items there for pick up only. They are the 800lb Gorilla when it comes to traffic delivered to your posts.  

The Klipsch are historcially important speakers, and have a dedicated loyal following (great efficiency makes them attractive to weak amplifiers). They are an aquired taste. But more objectively, they do not compare well with modern speakers. 

There IS a market for them, but takes time since shipping is complicated/expansive and therefore only regional market considered. 

They should sell in time. They are big, heavy, local sale and pickup only limits buyers, rough time of year to sell anything at that price, and you offer limited payment options...I've had to list similar a few times...

It’s a soft market. 
 

If you want the maximum price you need to be willing to ship economically, get the details figured out and explain them in your ad. 
 

If you absolutely won’t ship and you want to sell quickly you may need to knock $500 off the price…. and even that may not be enough. 

I bought a brand new pair, shipped to me for $5,100 out the door. $7k is NOT what a “smart shopper” pays for them. As far as sound, I like them more than my Cornwall 1’s or my 1984 Klipschorn’s. The CW 4’s are GREAT speakers when paired with the right tube amp system!