Three strand nylon comes on spools, generally 600' to the spool. Brait is a different beast - the manufacturers just ship it in a box! I guess it packs so well in a box that no more sophisticated packaging is needed. I've gone to all brait for my 'on board' dock lines (2 long, 4 shorter). The lines I leave behind when I leave my slip (floating dock and pilings) are still 3 strand. Splicing the stuff is kinda fun - once you sort out the left and right laid strands.