I was scammed one time when I bought a portable speaker. It looks nice and 100% working but when I used it the battery isn't working. So the next time I bought another item I checked the dealer and read the reviews carefully.
In online shopping it's better to view the reviews first before buying the actual item. Or it will be disastrous for you to buy that item. You should know for a fact that there are MORE fake items online than buying it in the mall.