1. When looking for a product online, take the time to read reviews. Try finding the same product on different sites to read as numerous reviews as you can. Reading many reviews will allow you to get a more general notion of whether or not the product you are interested in meets high standards of quality.
2. Be careful in regard to the online stores that you consider buying from. If the web store is poorly designed, packed with misspellings, and overall fishy, you should take your money elsewhere. These are signs that something might not be right about this store. It's preferable to be safe than sorry.
3. Be sure that you're entering your payment details on a good site. Look for "https://" in the URL of the site that you're seeking to buy something from. If you don't see that or no symbol of any website security, then it's probably a great idea not to trust those people together with your account information.
5. Before buying from the new online retailer, do your homework on them. Check online reviews from other customers to see how it handles stuff like customer service, shipping, and its overall buying experience. You can also look into the BBB to determine if it has any disputes and whether those disputes were resolved professionally. Try contacting the company via email and phone number, if it's posted to ask questions on its business before you buy anything.