CamelCamelCamel (what a name!) is a free website that tracks the price history of any product on Amazon.com. Being a big Amazon.com customer, having this tool at my fingertips is invaluable. I can check to see if a product that I want is at its peak or valley and make judgement calls accordingly. You can even set alerts to notify you via email or Twitter.
This incredibly useful service is free! What are you waiting for?
Looking for the best flight to your destination can be a painful experience. hipmunk aims to fix that by presenting one of the best user experiences I’ve seen for this type of application. By providing a Gantt chart-like UI that’s easily sortable (by price, stops, times, and agony—no joke!), you can see at a glance which flight works out best for you.
If you prefer the standard table text presentation of sites like Priceline, Travelocity or Expedia, why not cut to the chase and use, Matrix2, the search engine that all of those sites use:
If you’re shopping for a Mac, AppleInsider has a very handy price matrix that compares the prices of current generation Macs across multiple sites.
Equally handy is the MacRumors Buyer’s Guide. This website tracks product releases and recommends whether or not it’s a good time to make a purchase based on an impending new release or update.
That covers when and where to buy–can’t help you with how to buy it, though. 🙂