I'm part of the Vintage Purls Summer Sock Club 2009 and I'm loving it! I received the second package yesterday and the first last month. The first come with a wonderful bag, pattern and yarn, the second with a gift you knit for yourself, pattern and yarn. They both came with some yummy lollies which is such fun. The cost was $95 so with each skein of yarn being usually $23 for Limited Edition and patterns usually being about $5 and the with gifts I think its very good value. Its also the fun of our own ravelry group and the joy of having unique yarn and patterns. I also love communicating with the purveyor Morag who taught me to Magic Loop. She is also the only online yarn shop in New Zealand to stock Knit Pro so I love being able to order more neeldes that Morag pops in my sock club packages for free shipping.
Here's Vintage Purl's picture of the first yarn and pattern called Bluesky Baby which I haven't started - I'm scared of lace but I hope to do it one day, or failing that I'll make lots of blue booties.