Hello, can anyone suggest where (if possible) to find the Blue Water 8mm Canyon Pro DS or the Canyon Extreme to purchase by the foot? I can only find options in the 200', 300' and 600'-but more typically in the 200' and 600'. I wanted to purchase a 330' or there abous length of rope. Shelling out the $$$ for the 600' would be frightening. Thanks for any suggestions.