So far I'd have to rate my reduced pricing plan as an abject failure. After one month with the price of LEVERAGE at a mere $1.99, I've sold no more copies than I was selling at $9.90. Of course, on the (few) copies sold, I've earned considerably less.
Sometimes pricing changes take time to take hold, so a bit of patience is still reasonable. While I'm sure that LEVERAGE is showing up at the lower price on Amazon and Smashwords, because Smashwords "distributes" the ebook to other retailers and updates happen at irregular intervals, I'm not positive that it has even reached some of them at the lower price.
It was my intention to run the experiment for six months, and I'll be sticking with it -- even if I don't seem to be getting much traction.