Also, I see from the comments on carsonified that they're going to charge $20 for the IDE. If anyone watches the video, I'd be interested to have that verified.
Do not ask people who do not pay money for software how much money to charge for software.
If they're trying to undercut their competitors, I think it may be an error.. Charging $20, rather than $400 will make people think it's cut-rate, and not up to the challenge. No one who's making a professional/moneymaking website will be stopped by a $400 charge.
This makes me suspect that perhaps they're after the Wix/weebly market. Drag and Drop a website, rather than a professional-level tool. These tools are consumer facing, and don't generally resemble the Atlas versions I've seen much.
Don't get me wrong, I'm excited about Atlas, and look forward to buying a copy, but I'd rather do so knowing that that company is making enough to hire competetant engineers to keep expanding it! ;)