Try this, go to where the local SBC or Comcast or RCN office is. (Whatever cable company that has High Speed Internet in your area is called.) They have a TON of that stuff just lying around. People turn in their old boxes along WITH the CAT5 cables they got with thier High Speed Modems.
That stuff just sits there till someone throws it away. I could ship you some, but why pay for shipping when all you have to do is fin out where the technicians meet that service your area.
Also, try stopping a cable service van. Those guys usually have a few cables on them too! (Just lie and tell them you have thier service but didn't want to call in a trouble call just for them to run out and give you CAT5!! They will be so happy for you not wasting thier time they will give you all the CAT5 you can carry.)