Some item prices include shipping. Where that is the case, the listing should say so.
Otherwise, I prefer to charge only the actual cost of shipping. If special packaging is required, I may ask extra to pay the cost of that.
Books and magazines go via USPS media mail, unless you are in a hurry. If media mail isn't fast enough for you, expect to pay considerably more.
The cost of media mail includes a tracking number, which I will send to you once your item(s) ship(s). That way, you can monitor the progress of your shipment.
Questions? - Ask