It's meant to be a special offer but I got it years ago and any time I go to look for it for friends it's still available. It's the same as the Unlimited DSL Package which cost $11 a month whereas this works out at $8 a month. Only downside is you have to pay the year in advance as opposed to monthly.
Details from the site:
Unlimited DSL - US$ 96 every year
Works out to be $8/month
No Speed Limits
Exactly the same as Unlimited DSL Plan
You will pay $96 every year as long as your subscription remains active. We will not raise the price.
Astraweb also supports SSL which is nice and their retention is at 1320 days.