what are your top "audio bargins" in your system history?

@tbaradet1  Nice!  

Was purchasing a beautiful Luxman L-100 in 2002 from a music teacher a few towns over. While there I was admiring some of his other pieces & we made a deal on his Sansui, AU-9500. Both great components. We're shaking hands on the way out when he points to a box on the floor. Tells me "why don't you take those too, now you'll have a complete setup". Box contained a pristine set of 11ohm Rogers, LS3/5A. I offered to purchase those as well and he replied, "I have bigger speakers now, you take those" pointing to a room filled with Gershman & ARC and a Baldwin, Grand Piano. There is no better deal than free, lol. What a wonderful old gentleman with great taste in Audio.

The biggest bang for my buck was buying a Linear Tube Audio Micro ZOTL or MZ2. This high-quality headphone amp, preamp, and class A 1-watt power amp makes this the Swiss Army knife of Audio.

Pair of Carver Silver Seven 900.. for waaaay less than $32,000. With all new KT-120s.

I bought a new pair of Thiel 2.7 when they were clearing out the a- stock after their closing was announced. Nearly 75% off, they were the stunning birdseye maple. 
probably the most beautiful wood finish I’ve ever owned. Even my kids were impressed.