I was with a group (mage, SK, rogue, cleric, druid and bard) in barindu farming the inside of the pyramid and we were getting an AA every 45-50 minutes. I am not in a raiding guild and have never set foot in any EP so I can't compare besides just giving the time it took to get a point down in GoD.
In addition to the AA, we killed the named twice and got a shitty hood BUT could have gotten the new spells (we were just unlucky). In addition to the spell-possibilities, we were there to get one of the keys for the Manacle quest, which results in
this neato sash. Not good for you time people, but really really really good for us non-raiders.
I <3 GoD.