So, just as I was denigrating the benefits of being in the Illuminati, I received an e-mail from my Web hosting service saying that they are lowering their rates from $256 for two years to $180 for two years. (I am getting less storage, but I'm using only a tiny fraction of what was available before, so that's not a problem.) I've amended my posts about costs to reflect the partial rebate I received, and of course I'll be paying less in the future, which is nice.
If you're trying to estimate your own costs, you can also knock off the $40 per book charge for CreateSpace's ProPlan, since they now offer their books more cheaply as part of their free package, which was half the reason to join ProPlan. The other half, Expanded Distribution, is now just $25, assuming you want it.
One of the things I like to emphasize to people about self-publishing--especially if you just want to do an e-book--is how ridiculously cheap it is. And it seems like it's just getting cheaper....