When buying items online it is very easy to get carried away with low prices without really looking in to what is included. Many websites such as Amazon or eBay offer the same product at varying prices by different sellers. Often we always look for the cheapest but once we have added on postage costs, it may be that we end up paying more than if we had bought from someone else.
Always check what the postage fees are on a product and if the website states you have to create an account before seeing the delivery cost then you may wish to go elsewhere. If you cannot easily find out the postage costs of a product then be sure to ring up the seller or email them to confirm before continuing with the purchase. You should also consider what the returns policy is and if you are responsible for postage returns.