Real world Loudspeakers what does very good cost ?

@soix ​@musicaddict The idea that you have to spend $15k to possibly get good sound is the kind of thing I expect people to say who buy their audio the same way they buy their luxury cars.  They have a great deal of disposable income and can't possibly think they can get value at a price the rest of us mere mortals work at.

Your endorsement of the Joseph Audio Perspective2 is interesting.  Perhaps you should look at this SEAS kit system, which uses the same tweeter and similar SEAS mid-bass drivers in a transmission line cabinet and crossover designed by Joe D'Appolito.   The guy is unloading them for $750.  The kit is $2200 and in the end, is comparable to your Joseph Audio Perspective2.

https://www.usaudiomart.com/details/649968945-seas-thor-speakers-in-light-oak-cabinets/

@russbutton I was recommending a used pair of Perpective 2s at a bit over half MSRP so nowhere near $15k.  Also I’m not into building my own speakers, and as a lot of the magic in JA speakers is the Infinite Slope crossover that is patented, I’m not sure how much of the JA “magic” would be lost there but pretty sure there would be at least some.  Also JA doesn’t build transmission line speakers, so that’s another major difference.  With all that not sure how you can confidently say they’d sound comparable.  Some things are just worth paying for IME. 

I have Focal Kanta 3s in the $15,000 price range now. They are excellent.  Everything has gone up. I bought them on sale for $9500.

@soix 

You are 100% correct. The speakers that @russbutton  a link for may be good, but they are in no way comparable to the Perspectives in design approach. 

The idea that you have to spend $15k to possibly get good sound

exactly. Good sound starts around 60K