What are Sponsored Products?

Sponsored products are virtual downloadable products which are available at zero fee the majority of the time, however at random intervals the products will be sold at a price to cover the costs of development and distribution of the product itself and other sponsored products. Thus popular products may be used to raise funds to develop new products or otherwise improve the means of distribution.

NB: The majority of the spreadsheets have been available on ExcelCalcs since 2007,  so if sold for a fee, here, for more than a year they would still have been available the majority of the time free from fee.