Rereading the post again, it sounds more like "a day".
It doesn't sound far fetched for a starter if they got lucky. Most of the time it's harder to keep it going at that rate.
To clarify....
$400 TOTAL for June 2010. NOT per day. I made a total of $20 in May so my sales are on the up-tick.

There is a poster above me who claims $700 per day. If I made $400 a day I'd be hawking a e-book by now.
I'm a newbie at this so telling someone how to AB would be like a freshly licensed 16 year teaching his buddy how to drive a car, but.....
My advice is as follows:
1. Read the forum (again I'm saying this). Find the AB posts with multiple pages and read the entire thread. Make notes. There is no spoon, make the effort.
2. Spend the money and invest in your business. (Yes, this is a business and should be treated as such). Buy the WP plugins that are best to help you make money. Plan and set goals then ACT.
3. Get your own domain and hosting. The free ones were a waste of time for me. Which host? I use G0daddy, works well for me so far. Use whichever one you want. You can change later if you wish.
4. Throw together your first blog. Yes, it will suck. Learn why it sucked and make the next one better.
5. Don't believe everything you read on BHW. Trust your instincts. If someone says sub-domains will not do well but you have 10 that do, then you know that someone is full of shhiit.
6. Test, Test, Test. If one site is making a steady income of $20 a day you must understand why. Apply those techniques to your other blogs.
Short of telling what my niches are (which I won't divulge), or "exactly" what I did (which is my own personal twist and wouldn't make sense to most folks anyways) This was my roadmap.
I'm no IM guru and don't claim to be. I'm still learning and making mistakes but I'm also making some nice pocket change along the way. I guess my final say here is:
Yes, there is potential to make money with autoblogs with less than a $300 up front investment. The only way to learn how is to get started.
People don't fail at internet marketing, they just give up too soon.
Good luck BWH'ers. (my last say in this thread)
