I did not have to order anything else, Prime , is a one time charge and I get streaming videos and free books for my Kindle and other things free as well as shipping for normal delivery.5-7 days. I guess you could say I paid for the shipping already with the fee, but I order my genealogy books and other various and sundry items from them. I think I even get a small discount on each item shipped.
If it was not for the streaming video I would have skipped it but...... Since I do not have extended cable I justify the cost that way.