Do you sell sail boat line at your store. If you do get some 3/16th amsteel (or any brand's spectra rope). Buy 80ft, and grab a book and learn to splice your own ends, it is really easy with 12 strand rope. http://www.samsonrope.com/site_files/12S_C1_EyeSpl.pdf
When i worked at a marine store i used to make ropes for under $25. If they have a spool end, or remnent you can usualy grab those for really cheap, sometimes free.