How many people here generally buy used?

Just like buying a car, always buy used and let someone else deal with the depreciation off the lot. Finding an amazing deal is a big part of the shopping experience for me and part of the reason I enjoy this hobby so much. As someone who also likes to swap gear around (hold for a few components) every 6-10 months, not taking that huge hit of lost value makes it much more bearable.
I’ve built a BMW M3 cost system on a Toyota Yaris budget, talk about bang for your buck!

I buy Used, Demos, Blemished, B stock whenever I can. It's like cars.  I always buy last years models in December or January when they are desperate to get rid of them. When the Supremo Master Super model comes out, buy last year's Supremo Master at half price. It's just as good as it ever was.

Nearly always; let the other guy eat the depreciation. Same with vehicles. Only buy new when it’s not an expensive item; or if I just can’t find it used. 

All amps, subs, EXOs, TT, blu-ray player - used
speakers - factory refurbs but looked perfect
TV, pre/pro, CD changer - new

Most of my gear I bought used or demo. My system at retail price would be out of my budget . . . and retail price system within my budget wouldn't put a smile on my face.