Hello Darkprimegaming,
Try to keep things as simple as possible for yourself. As some others have suggested and we do this too - include the shipping costs in the price of your item. As a small business, you'll never compete with Amazon so don't even worry about that. What works for us may not work for others however, this is something you need to figure out through a bit of research and testing. For example, we only use one shipping service - USPS Priority Mail Flat Rate - doing this gives us a better idea on costs and we don't have to worry about buying boxes as they are free. We do have some additional expenses like shipping labels, tape, bubble wrap and our time to package and take to the PO but, this all works out. From the buyer's point of view, you're not charging any shipping fees at checkout.
