You get as much as you like for .05 cents a foot plus shipping.  Great for medium to small parachutes from 9" up to 18" or so.  If you need a string that will do the job without adding bulk to your rocket tube then order this stuff.  To see what this string looks like see the picture and it will be the third in from the left side of the photo.
WHEN PURCHASING STRING,  JUST ADD IN THE QTY. BOX HOW MANY FEET YOU WANT.  JUST PUT THE NUMBER IN THE BOX.  SO IF YOU WANT 10FT. JUST PUT 10 IN THE BOX AT CHECK OUT.