Money Matters With Books: Would You Drop You Price On A Published Book?

I've had my book up on Amazon.com and other Amazon websites for a while now and sales are reasonably good. They sell about three books a week, and the price is about $15.00 US. Now, here is the money matters problem and my own solution.

My book has been around since the end of November and the price has not dropped anything since it was published. After 6 months of having the list price the