Username or EmailPassword
He's got a point. Toying around doesn't mean spending 15 minutes playing and that's it.
To truly take a measure of an os you've got to install it, hack it, change things install things, try different adapters and hardware, build some code on it etc. With live demos, you can't really do any of that. The lack of change persistence is a non-starter.
The $149 price tag on the Home & Student edition is a lot to ask for an eCS license that covers software that is only marginally different from Warp 4.
I don't think it needs to be free, but I think $50 is a more reasonable price for eCS.