That one you found looks like an incredible deal - at that price I'm gonna pick up two!
Evil Spock, if you are willing to buy two of those, I suggest you take a look at the Powerfilm f15-600. It is flexible, produces 10W at 15v/.6amps. If you check Powerfilm's website, you can see them taking several bullets and continue to produce nearly the same output. A little shopping around and you can find one for about $110.
