Ruth, just ran across this blog post and thought of you: http://danieljfriedm...-published.html
I sort of agree with one of the comments left on the post-- How many traditionally published books actually sell over 100K copies? It's certainly not the majority. In addition, the author of the post keeps using .99 as the price which he's basing his math on, and truth is, most ebooks are priced higher than that. At 2.99 per copy (a popular price point for ebooks), the author gets about $2 for each book sold, not the .35 he keeps mentioning.