1. Make it 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 like. And in case you've recently purchased at full price, you can request a price adjustment to meet the new deal.
2. Pay close attention for potential sales online starting around 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 few days. You can often find exceptional mid-week bargains with just a little online research.
3. Do not forget to comparison shop when you are looking for things online. People usually do this when shopping in physical stores, but they don't think about it on the web. If you choose the first sale you see, there exists a chance you are going to miss out on a better deal somewhere else.
4. Ensure that you're entering your payment details on a safe and secure site. Look for "https://" inside the URL in the site that you're attempting to buy something from. If you don't see that or no indication of any website security, then it's probably a wise idea not to trust those people with your account information.
5. Make sure to read all the information about any product you are considering purchasing. Just looking in a picture online can be deceiving sometimes. It will make a product look bigger or smaller than. Make sure to look at the description so you know exactly what you are actually purchasing.