Bought these two spools to do cable organizing in our server room a while back, one roll of 1000ft 1/4 and another of 500ft 1/2. Ended up using what I’d estimate to be around 150-200 ft of the 1/2, and probably about 50 ft from the 1/4 (it didn’t really suit our needs). $100 shipped for both
We bought from here: http://www.cableorganizer.com/over-expanded-pet/