I think the real answer lies in how badly you want to try it. For some people, an Ardbeg is an Ardbeg, and my recollection of the '77 is that it fits comfortably in the distillery profile. I'm always leary of spending a large amount for a dram in a bar, because I'm not at all certain that I'm going to have a really worthwhile tasting experience. Yes, it's cheaper than buying a bottle, but you aren't really going to get to know it, are you? Still, it could be your only opportunity to try something unusual. And the fact that the bottle appears to be full is a good sign. So again, in my mind, it's a matter of how much you want to try it. And of course that is why you want to hear how good it is--I'm sure some others here will give you their tasting notes (and I suggest they specifically compare it to other more widely-available Ardbegs). Sorry I can't do that--I killed my bottle quite a long time ago!