I think eBay has an ebb and flow, with no rhyme or reason. I remember seeing a CT-100 with a known-bad tube sell for $2500, and now this! I just won this set, which I was shocked to win:
http://cgi.ebay.com/ws/eBayISAPI.dll...MEWN%3AIT&rd=1 ... It's an early 50s Hallicrafters big metal table model, not really worth anyhing but I sure thought I'd get outbid at $9! Looks like it had an AC cord fire, but otherwise clean.
***Since this is the color TV column, and I am only referencing this ad to show that the present eBay market is down to support a theory of why the CT-100 stayed low, please don't reply on this Hallicrafters on this thread. I will be starting a new thread on the Vintage and B&W TV column when I get the set home***
So it's all timing & luck.
Charles