How many people here generally buy used?

It's rare for me to purchase used equipment.   The predominance of my system was purchased refurbished or close out.  Like new at 1/3 less sometimes 1/2 price.  8 speakers,  pre/ pro (twice),  turntable,  and power plant.

The only brand spankin new piece in my current system, is my Aric Audio Unlimited preamp. Which is now 2 years old. Now,my system isn’t the end all be all of hifi,but without purchasing used,it would be half the system it is. For me,used is the only way I can afford decent equipment. Even my cables are pre enjoyed! 

My standard practice for years has been to shop for Class A-rated components (Stereophile) of five to 10 years prior. Can get them for great prices, enjoy what was recently state of the art sound for a whole lot less money.

I've bought Audio Research, Ayre Acoustic and other brands/models this way with GREAT results.

I started doing this in the '70s through the old paper-printed Audiomart classified publication. But now, with the Internet, it's way easier.

Back in early days, lots of brick and mortar audio retailers, purchased more new or demo. Now days, nearly all used, buying new without the ability to hear in my system changes the new versus used equation in favor of used.
Also, I tend to modify my equipment over time, I violate warranty buying new. Bypassing break in is nice as well.

I still occasionally purchase new when I have a specific piece of equipment in mind that never comes up for sale used, or when it does has minimal discount over new. Has to be at least 25% discount over new for me to even consider it.

I kinda fell in love with the Rotel 900 series decades ago. Liked the looks and availability on ebay. Only new piece is the 965 LE cd player because of moving parts for $600. I know this is pretty low rez compared to what you guys have but I couldn't even afford this at msrp. So under $1000 for almost $4000. It took much patience. Also got my "dream speakers"-mint B&W matrix 3, for $400 cash at a local store.