kitty: how far does a skein of habu yarn really go?

Habu item #: N-45 3.5/1 cotton nerimaki slub I would be the first to say that I have a huge fear for running out of yarn. I always over buy for any project and I have no idea how to estimate how much yarn it will take if it is one of my designs. So we will not discuss the closet. :) So it really did strike me when I was at TNNA in the Habu booth one of the store owners was in total disbelief that the little skeins really do have a lot of yardage. She was almost arguing about the fact that there had to be nothing in that little ball. So I thought I would share and hopefully dispel the belief that there is no yardage in those little mysterious skeins. The sweater up above measures about 57 wide by 7 inches tall and that is all from one skein of yarn.