I'd have to agree with Frank, it's hard to say what's worth it to somebody else. If you're looking for a knife to use as a tool, I don't think that there's anything about GEC that makes them that much more valuable from a usefulness standpoint. There are plenty of Cases out there that have outlasted their original owners and still have plenty of life left in them. If you're looking for a knife that you can take some pride in, or just plain enjoy using every time you pull it out of your pocket I would say that the GEC is definitely worth it. It all depends on what you prefer. An Escort will get you where you're going just as well as any other car out there, but a Town Car will make the trip a lot more fun. It's worth it to me, but may not be to you.
As usual, I'm a little late to this party, but I thought I should weigh in as one of those who has decided that, for me, GEC is not worth the money. But, as Frank and Cory have pointed out, that's just
my opinion for my own situation. And I have to confess that I've come to that opinion without actually ever handling a GEC product. One of my current "goals", vis-a-vis pocket knives, is to acquire representatives of as many different patterns as I can, preferably by picking up used knives that need some minor TLC to make them suitable for EDC, and to do it within my arbitrarily-chosen budget of about $20/month. I'm not getting any younger (62) and I'm a little impatient, so I'd rather pick up 1 or 2 knives each month at $10-20 apiece than save up for a new GEC once or twice a year. In terms of Cory's analogy, my approach is consistent with much of the rest of my lifestyle; I don't drive an Escort, but my most recent car purchase
was a 3-year-old Focus.
Having laid out my philosophy, I have to admit that it's not working out as well as I hoped.

I've bought more new knives (without busting my budget) than I ever planned to (Rough Riders, SAKs, a couple of cheap Bucks), and have had very little success finding what I hoped for at countless yard sales, flea markets, pawn shops, etc. Even though I'd rather handle a knife before buying, I guess I'll have to start sitting' at the dock of the 'Bay, watching the knives roll away.
And I'm glad lots of folks have decided that GECs are worth the money for them, because I sure enjoy looking at all the photos they post, and "hearing" the excitement and pride when they post about their newest acquisitions!!
- GT