1. A reputable online seller should have a history that is recorded with the Better Business Bureau. Check with the BBB before you part with your hard earned money to see if there have been any major or continual complaints lodged against them. You don't want to be spending your cash with a company that fails to provide.
2. Look for the right times to shop online. Often the stores that you frequent will have online sales that follow a time pattern. Many, for instance, schedule sales for the beginning of the month or at the end. When you see there's a pattern, hold off on buying anything until the upcoming sales period begins.
3. Ensure that when you make a purchase online, you are aware of if the site is secure or not. You do not want your information being compromised in this day and age. Identity theft is quite common, and you also must protect your information in any way cost so that you wish to keep making purchases online.
4. When you are online shopping, make sure that you are merely shopping on secure websites. Look in the site URL and it should display "https" as opposed to the usual "http" at the beginning. Also have an updated copy of anti-virus running on your computer too. This will ensure that you have a safe online shopping experience.
5. Be suspicious of overdoing it. It is much easier to overspend if you are shopping online. You start to rationalize that you can spend more for those shoes because you saved money on gas and the food you would have gotten in the event you went to the mall, for example. Give yourself a restriction and stick to it.