I've had a few requests for screenshots. Here is a link to one:
http://www.draggar.net/stuff/shot.jpg
It is a screenshot of the main part of the spreadsheet (the example row) and the totals row, plus the macro buttons.
It doesn't show the selling section though.
I am also keeping a mailing list of everyone who buys it in case I add more features to it (I'm always open to requests and/or suggestions).
This spreadsheet is 100% created, maintained, and owned by myself, it is 100% original.