My LYS, Needlework Unlimited, opened today at noon and I was there at 12:01.
First, they had the yarn I needed. It was even the same dye lot, but the lovely woman working back by the Koigu display told me something incredible when I told her all I really needed was about 5 yards. She said that Koigu sends NU the "loose ends" and that they had them on a table over by the needle point supplies. I didn't know what she meant by loose ends, until she explained that at the end of a dye lot, they have leftovers that aren't enough for a whole 50 gr skein, and they send them to NU, which in turn sells them for 25 cents a gram.
There were two of these "loose end" skeins in my colorway. One was a 35 gr skein (waaayyy more than I needed) in the same dye lot as the socks, and another was a 16 gr skein (still more than I needed, but less than half of the other one)in a different dye lot that, oddly, seemed to match better, colorwise, although the percentage of light green seemed quite a bit higher. There isn't really any dark green in it at all. It's the toe, though, so who cares? And $4, not $12, which made me very happy.
The next time I buy Koigu, I'm searching that bucket o' leftover goodness for a little toe insurance, either matching, or coordinating. Either way, it's a wonderful thing.