I was told by betteraircraftfabric.com that the Oratex 6000 is $76.85 per square yard and the Oratex 600 is $53.80 per square yard. It should be noted that that is square yard vice linear yard in case you want to compare with ceconite or Polly. I am just wondering if a Kitfox SS7 can be covered with 600 vice 6000. According to their website any LSA can be covered with 600.