I'm used to dealing with couples that manage to get by on $30,000 per annum.
Is that in the city? How?!?
We did 50k combined without kids while I studied and some nights we ate cereal for dinner. Rent alone took a lot of that and then there was transport to work/study, then food came last. Entertainment was a video. We would eat at our parents' at least one night a week.

I would consider $80k to be middle income. I'd consider 150k+ to be high income. (But I like BG's sliding scale method - that seems much more fair!)
We too would be stuffed without the CCR - CC is more than half my pay. I think we are realistically high earners. We don't live a 'rich' lifestyle, but I don't think that's what it means. We don't even own our own home but we do own a business and we can afford to buy new things and go on holidays. It's all relative. Yes, there are people who earn HEAPS more than us - there's a heck of a lot of money out there, but those 'very high earners' I think are in a minority.