Wardenclyffe Tower

Folds up to carry like a traditional binder, this fold out panel is rated at 15watts and costs about $140.  Although that is still over $9/watt it is much cheaper alternative than the rollable thin film panels.

Taken from :

http://www.innergypower.com/mm5/merchant.mvc?Screen=PROD&Store_Code=INGYPWR&Product_Code=IP15B&Category_Code=PSBP

Innergy Power's portable solar binder packs consist of a lightweight fiberglass (FRP) solar module built into a zippered binder and a 10' corded cigarette lighter receptacle. They allow users to power or recharge devices such as cell phones, PCs, PDAs, iPods, etc. The solar binders can also recharge our Power Plant 12V, 5Ah auxiliary battery.

They have quite a few other interesting solar products here :

http://www.innergypower.com/solarProd.html