That's a really nice way to go about it, the 'plan' I gave is much more coarse (and assumes a single product). I'm really curious how this whole thing works out for you.

And I'm also really curious how many people will try the price doubling (once or more time) and will write about it.

How are you planning to do the statistics to come to the right answer?

I have one answer at http://elem.com/~btilly/effective-ab-testing/#slide94 but I'm interested in seeing how others tackle this problem.

I downloaded your scripts and will check them out after I've got all the data.