A skein of Hempathy is 153 yards. I've found it can go a long way, and that's even with yarn-eating crochet. After I made myself a Comet using the Tea Rose yarn, I still had alot left over. I added a crocheted edge to a gauze scarf. And I still had yarn left so I crocheted a necklace pouch to hold my eyeglasses or iPod Nano.
Even after that I had a bit of yarn left. I could have made a little flower or motif. Instead I crocheted this little bird from the Japanese book, Charming Crochet, that has no function other than hanging sweetly on my wall.