[tocomment]

What are you trying to do exactly? It depends a lot on the type of data you're trying to gather.

[jreilly]

I am basically trying to track prices of certain products easily so I do not have to worry about doing it by hand and checking myself every once in a while.

[ks]

Have you considered looking at the price comparison sites? Some of them have an API. Unless you plan to compete with them directly, you will save a lot of time.

Example: http://developer.yahoo.com/shopping/