I think, for the quality, it's on the lower end. Most such services that I subscribe to (or have in the past) are $20-30 per month. The quality of both the production and content is easily worth the money. Even more so now that there are 4 seasons of some really high-quality screencasts from the past.
The value I've personally got out of DAS is incredible.
No I agree, but then again that's a dollar a day and apparently he could buy a house in Seattle out of DAS so.. there must be enough people that are fine with that price to make a living.
When you set up a paywall, you cut the number of people who will consume your content by a ton, and then you have to set the price pretty high to make a living.