What components are a good value in used market?

I just bought a pair of Spica TC-60s ($350), an Adcom GFP-555 preamp ($100), and two Adcom GFA-5200 power amps ($100 each) and consider all of these world-class bargains. Bought a Mission 700as subwoofer five years ago for $150 and would similarly consider that a steal except that the amp died months later. Still, it's a superb sub for moderate-volume 2-channel listening and worth the $200 I've put into it for repairs. I expect all but the sub to hold their value well.

Thanks for all the posts - I will definitely take these advices and hunt them down.

Cheers...

Are you referring to speakers only in the 70's?
I'm not sure what your asking?
Dalquist DQ-10
Quad ELS Speakers
Acoustat Model 2+2,s
Pyramid Met 7's
Vandersteen Model 2's
Spica 50's

I have seem my amp the Sonic Frontiers SFS 80 go for about 1K, retail in its day, 2795. Had mine for about 12 yrars, only problem is that I had to change the fuse, along with the tubes. Excellent Tubey sound, tight bass, good imaging when properly matched

BERNING