looking for a good source of rope

I am looking for a good and inexpensive source for the variety of rope and lines etc used around the boat. I have halyards bought but need mooring lines, sheets and a selection of smaller material. Additionally perhaps some climbing tape which I usually see used for safety purposes stretched from stem to stern. I would also appreciate any suggestions as to where folks have set retaining brackets to secure these jack lines and how they were located for maximum effect ie for ease of use and also ability to reach most parts of the boat without unclipping.