Prices Drop Monitor for Amazon monitor any items you are interested in and alert you when price drops.
Amazon changes prices frequently. They go up and down constantly. Why not take advantage of this to make a deal? Know exactly when it is the right time to buy and when you should probably wait.
It is quick and easy. No sign-up, no configuration required. Just drag & drop items and start saving money.
It works on any Amazon of the world. And it is free.