I'm kind of with Stimpee on this.
Ok, it stings a bit that this is only for folk that go to electroglide (as if the line up isn't reward enough

), but it stings a whole lot more that I won't be going to Electraglide. I bet that recording will mean way more to those people than it would to the rest of us. I know that's how I'd feel. And I'd probably get a kick out of that exclusivity if I did get such a recording from an Underworld gig I was at.
If selling recordings like these solely to a gig's audience enables them to do this for more gigs, then great. If it is just a one off, then so be it; I wasn't there and I'll just have to take it on the chin like lots of other stuff I miss out on.