Just beat my record today...had 3.1m in 45 minutes... Most of my 45 minute sessions are around 1.75 million though. All depends on loot at the time and if you get lucky enough to find a few good ones. Best gold I've had in one raid is about 500k.
I'll be raiding like a mad man this weekend.... Have to get a good jump on these Lvl 10 walls... 60 done so far.
