1. Read customer testimonials before you buy anything. People are delighted to complain about bad service online, so search for sites and testimonials which can be terrible so you are aware what you're getting into. You need to take bad reviews using a grain of salt, but if you see many, you know there exists a problem.
2. Pay close attention for potential sales online starting as early as Wednesday. Many brick and mortar stores do sales on the weekends, and to compete, many online stores have moved their sales days up by a couple of days. You can often find exceptional mid-week bargains with just a little online research.
3. Transform it into a habit to register for price alerts. This goes even for purchases that you've recently made. Price alerts will let you know when a product has dropped to a price you prefer. And if you've recently purchased at full price, you can ask for a price adjustment to fulfill the new deal.
4. Take time to browse through different online stores to compare and contrast the products offered. Unless you have your mind set on a specific brand, you need to take the time to compare different products. Select one with all the features you need and compare prices too. Visit your favorite online stores often since new releases become available on a regular basis.