Audio deals you bought that seem impossible for the price?

I got a pair of used Clearwater Audio Duet6 stand mount speakers for $800. They have Accuton ceramic tweeters and drivers, mundorf caps, Supra wiring, just top notch parts all the way and the cabinets I heard were built by Salk and are almost 30lb each. I haven’t heard a stand mount for under $5k that are better, maybe different but not better. I don’t even have a place to use them right now but even my wife said I should hang on to them for as long as I like, and she hates holding on to things. 

I buy floor demo models and second hand. I’ve saved at least 60%. 

The three pairs of Magnepan speakers that I  have purchased.
They sound much better than any speakers in their 
respective price ranges.  

     No one is losing money. High end audio is typically priced at 6 times manufacturing cost.  This is how nice ole homey Paul of PS audio can afford to give MSRP in trade for your old stuff:  Assuming he sells at the standard of 600% of cost to make, a $6,000 piece has $5,000 to play with, because he has no middleman or retailers.
     Transistors, caps, etc are cheap. once there is a design, its mostly profit.
     Dealers  pay 50% of retail.  The distributor pays the other 50% to the factory.  Dealers typically pay freight, but on a good sized order, the sales rep will deliver to make the sale. 
     We all get great deals here and there, I hope, but as I said, no on is losing money, unless the company has other serious problems, such as getting stuff built by the lowest bidder, i.e. early American relatively higher end audio, such as Phase Linear, GAS (Ampzilla), and Hafler.