1. Read customer testimonials before you buy anything. People are delighted to complain about bad service online, so look for sites and testimonials which are terrible so you are aware what you're getting into. You should take bad reviews with a grain of salt, but if you see many, you know you will find a problem.
2. Many online shopping sites offer discounts if you use a "discount code". These codes are often found online by entering the words "coupon code" along with the manufacturer or name of the website you will be buying from. They might offer a percentage off or free shipping simply by entering within a simple code which can be easily found by investing a few minutes trying to find it.
3. In order to buy a used product online, learn more about the vendor first. You need to visit their profile and search for reviews authored by other shoppers who bought products using this seller. Usually do not hesitate to contact the seller to ask a few questions about the product you are considering.
4. In case a company includes a newsletter, register. Often, companies will give sneak peeks, deals and online coupons to people on the mailing list. However, be careful. You don't want to sign up for every company's newsletter or you'll soon be buried under endless emails. Only join a company's newsletter if you really like their goods and would use a promotion code.
5. A reputable online seller must have a history that is recorded with the Better Business Bureau. Check with the BBB before you decide to part with your hard earned money to determine if there have been any major or continual complaints lodged against them. You don't wish to be spending your money with a company that fails to provide.