On the downside, as a seller I feel like amazon takes my little widow's mite to itself. My publisher is offering my book at a 55% discount, which means they are paid $7.20 for each $16.00 book. Printing, shipping, and miscellaneous costs leave very little to go into the coffers. By contrast, amazon takes $8.80 per book. Yes, they ship, but is this fair? Furthermore there is no one to talk with at amazon about this. The publisher choices are to lower the discount to get more per sale (a problem for other reasons), or suck it up until and unless I the author get better sales. I actually had a good wave of sales and was building momentum until amazon raised the price. Now, I don't know. It is discouraging, believe me. No one reads this blog anyway, so I guess I can complain a bit. Sigh.
The summary below is from frugaldad.com.