Another thought - new niches that may previously have been less popular, or focused more on less expensive products are now becoming more popular because of the current state of the economy.

Along with an increase in popularity of money-making packages, I have been writing more copy pages and ebooks on topics related to debt reduction, stopping foreclosure, etc. Some of them are being sold as high-end packages in the $100+ range and are doing quite well.

A year ago - these same types of products tended to focus on less expensive products. Someone in debt wasn't likely to have a lot of money to put out for the products, now it is becoming a problem for more people, hence the increase in popularity.

Cheers,
Trevas