Now and then inexpensive and outstanding bargains.

Yaqin(China)"MS-34D"Pure Class A-Tube Integrated Amplifier.40 w.p.c.x2@8/4 ohms(Ultralinear mode),Front Panel Switchable Triode Mode(20w.p.c.),Remote Volume Control,Tube Driven Headphone output,EL34B Power Tubes,HUGE Japanese made Power Transformers,all for WELL UNDER $1000.00.I've had this I/A for a little over a week now & am just blown away by the sound!It drives my 4 Ohm Dynaudio "Audience 52SE"speakers with authority & control.It plays LOUD without strain,has awesome imaging & soundstaging,& OH THAT TONE!The timbre of instruments is natural & lifelike.My last 2 channel rig was based on a VERY HIGHLY regarded Sim Audio I5 integrated amp & this little Tube I/A matches that amp head to head in every aspect except 2(image & soundstage)were it leaps ahead!An Audio Bargain in EVERY sense of the word!

here are 18 according to TAS...

http://www.avguide.com/article/the-18-greatest-bargains-high-end-audio-tas-197?src=Playback

I would add these:
Bright Star nodes
herbie's Audio Lab tube rings
Canare 4S11 speaker wire
Goertz Micro Pearls ICs.
J River Media Center or even the J River Jukebox. The latter is free!
Various exotic woods as footers available from woodworking cabinet or hobby, shops. cost? Might be free. Results will vary.
DIY HT screen material, < $175 incld. velvet trim tape.
DIY acoustic treatments. Roughly 10% to 25% the price of the standard versions of likewise items..
IEC to NEMA power cable adapters for breaking in power cords, about $5 ea.
STEREOVOX XV2 DIG cable %100 or less in 1M length.

The JVC RX-305 60wpc(?) stereo reciever I use for the speakers outside on my deck. A real bargin for 15 bucks at a yard sale.

speakers: rega rs, canton gle, psb image, triangle titus, monitor audio rs
subs: hsu
power amps: emotiva
passive preamps by luminous audio
musical fidelity v-dac

I was hoping to get more responses.
My next addition may be premature but I thought I would share it with the community, the audio experience a2se preamp is pretty amazing, it's not dirt cheap but it is reasonably priced.