Dien,
One of the biggest ways the info-product producers seem to be able to leverage themselves is through an affiliate program. For instance, Jim Straw has offered an affiliate program whereby you can simply post a link to Jim's site with an id tag, and any sales generated from that link will earn you a commission. (I think you are already one of Jim's affiliates...)
Cory Rudl, Allen Says, Ken Evoy, Marlon Sanders...just about any of the "names" you can think of on the Internet have large afiliate programs. They not only leverage themselves by producing a product which they sell over and over again--they extend that leverage with an affiliate program. They "share the wealth".
The application of the lever is certainly something to consider. The same amount of "work" applied to a project using a "lever" can produce a much larger result than a singular effort applied to the project alone.
There are several software programs available for adding an affiliate program to a project...can you or anyone else recommend the "best" one?
Be blessed,
JDB
P.S. I'm glad your mother is better. I will keep her in my prayers.
Leverage your sales efforts with auctions...