Yesterday, i spoke with Steve Kovsky from Dynamite data in an interview. In short, this program installs as a browser [Firefox, Ed.] add-on and captures the lowest tech goods prices in real time and lets you know if the price you are looking at is indeed the lowest price.
For the interview and more about Dynamite data, please check out the interview that will most likely answer the majority of your questions about dynamite data.
http://www.brightsideofnews.com/news...recession.aspx