Re: You know,
@Hubert C and all
I once paid money for a copy of Netscape Communicator 'Gold'. It came in a cardboard box that was basically empty apart from a CD and a piece of card with information about the contents of the CD. The 'Gold' bit meant it had a Web page editor (spun off as Composer) and a mail/news client that became Thunderbird. That was in the days when you went into the shop and picked the box off the shelf then took it to the counter and paid money to a human.
Why not have a paid for version? All 'extras' off? Long term support? Laptop stickers? ISO with source code and build instructions for enthusiasts? Might make a bob or two.