Wow I was surprised to see Costco selling some interesting gear of late.
Great deals on the hammocks as well.
Here are some links, not sure if your Costco has these things in stock, but online is selling them.
Hammocks:
http://www.costco.com/Browse/Productgroup.
aspx?ec=BC-EC12951-ProdID11208043&
pos=1&whse=BC&topnav=&prodid=11208096&lang=en-US
http://www.costco.com/Browse/Productgroup.
aspx?whse=BC&topnav=&prodid=11208043&ec=BC-EC12949-ProdID11204717&
pos=0F&lang=en-US
Silk Sleep Sack:
http://www.costco.com/Browse/Product.
aspx?Prodid=11204717&whse=BC&Ne=4000000&eCat=BC|111|22101|48807&N=4014041&Mo=14&
pos=1&No=11&Nr=P_CatalogName:BC&cat=48807&Ns=P_Price|1||P_SignDesc1&lang=en-US&Sp=C&ec=BC-EC11000-Cat22101&topnav=
Sleeping bag system: Reminds me of the Exped Wallcreeper except this rating is to 14 degrees or so they say :)
http://www.costco.com/Browse/ProductSet.
aspx?Prodid=11242191&whse=BC&Ne=4000000&eCat=BC|111|22101|48807&N=4014041&Mo=14&
pos=1&No=1&Nr=P_CatalogName:BC&cat=48807&Ns=P_Price|1||P_SignDesc1&lang=en-US&Sp=C&ec=BC-EC11000-Cat22101&topnav=
Sorry the links were to long
