Nothing in that comment disproves what drp is saying.
The only knowledge you gain from idlewords' comment is the final amount. For all we know, $1,200 of that $1,300 might be earned from the first 100k impressions, and the other $100 from the second 100k.
In addition, just because idlewords has earned $1300 from 200k impressions doesn't mean that he won't soon exhaust his inventory if his site grows.
1. see the first case study i linked to. AskTheBuilder was generating 1500$ a day.
2. At that traffic level, you will become a google adsense premium publisher and google will help in optimizing your ads to generate maximum revenue
3. It just doesn't make sense that google can't fill an inventory. Unless you have a highly limited site with very less keywords to target, there will be plenty of inventory. At that traffic level, you can privately place ads if you are not happy with google. Do you think google would let go of a high traffic site? No! and this is precisely why they have a adsense premium publisher program
