I got mine at Fisherman's Marine. I don't know where you are located. But, my Hi-Viz yellow is about gone, so I have to fall back on my green. Every time I go to the flying field, I stop in to see if they have any more, since the store is right next to the park where we fly. But they don't seem to want to stock the yellow any more. And they haven't had 10# test in a couple of years. I may have to break down and order some online. I prefer 10# for my 1/2A planes. I know most people don't go below 20#, but I did some failure tests a few years ago, and the 10# test was breaking at around 18 pounds. More than good enough for my 1/2A's.
Mark