When I first test drove Rebellin for a section in an upcoming Linux Format, I reported that basically it seemed like a nice solid Debian respin, but many such are for free. It doesn't seem that Linux users gravitate towards the projects that require payment before trying. When I explained this to the founder and, currently, the sole developer, he said that there are indeed reasons why folks should want to pay the $5.
Is $5 too much to spend for a distro that you can't test-drive first? Utkarsh Sevekar says, "email support to all which lasts for the lifetime of the product. There is no monthly/yearly fee here. All included in the initial price. There are no limits to communication either. Customers can bug me as much a they want."
rest here