When I was in Seattle last weekend, I stopped by Recycled Cycles and talked with some of the staff I knew. It was a great time, and as we were chatting by their glass cases, they told me that the week's current rain had switched many people into "project mode" where they started picking up all sorts of components, including the nicer pieces in the cases. A lot of mid school as well as a pristine early-6400 Shimano 600 groupset for just $120! Said the Tricolor stuff and other vintage pieces were getting picked up by the college-age set. That stuff, as we know, looks good, works well, and isn't expensive, which is a great recipe for trying something out. That and hopefully a bunch of us simply sharing in the enthusiasm of riding bikes, enjoying building bikes, and making bikes your own.
Thankfully the crankset of that 6400 groupset was too short, so I left it for someone else. I did pick up a Racing T rear derailleur to build with or (much more likely) sell as part of a mini 9-speed Campy group, plus a 7700 GS rear derailleur for my 510. I miss Recycled Cycles a lot. One of the true gems of the used-LBS parts world.