Why isn't better quality used gear being made available?

Don’t be cheap and you won’t get punished anymore if you buy new! Cables are all custom made people don’t flip them as much since they don’t go “bad.”

High end estate sale things often end up at auctions. Check Sotheby's and Christie's if you are shopping that end. Ebay, Craigslist, HiFi Shark, AudiogoN and local hi-fi shops that take trade-in gear are the usual places. It is a small hobby in the larger scheme, and having a sound system isn't the aspirational purchase it once was.

@OP - A vast amount of high end gear gets traded in to dealers who frequently have a long term relationship with their high end customers. That may or may not end up on generalised sale sites like Audiogon or Hi Fi Shark. A lot of it gets trickled down to other customers within the dealers value chain.

i dont see how, emergingsoul. i see what you describe and exactly what you name all the time. if ur looking to spend money theres no shortage of dealers lookin to help, many specializing in the audio you describe. some of em, the rare times they carry less expensive stuf, overprice it according so it wont feel out of place! haha. skyfi audio keeps comin to mind. 

aside from dealers, the usual places continue to provide what you ask. 

"I have never been able to find used cables that are what I’m looking for from transparent, cardas, ect, or other.."

that makes no sense at all. i see that stuff all the time. i dont know what tiers it occupies, but here are the brands u ask for

transparent audio
https://www.hifishark.com/search?q=transparent+audio+interconnects

theras a LOT of cardas for sale righit now

@roxy54 big +1.