To get instant price drop alerts for you favorites products in
popular shopping sites you can try Happy2Purchase . It has both SMS and
Email alert services. So you can get alerts even if you are not
connected to the internet.

You should also check out Happy2Purchase (http://happy2purchase.in). Its a newly launched price tracker with both SMS and Email alert services. Its free and very easy to use in my opinion and yeah, you don’t have to Sign Up for anything. Sometimes its worth trying new things :-)