I am not affiliated with Amazon or Corsair in anyway but I thought I'd let you all know about a great deal I stumbled upon. 2x2GB Ram for $27.00 (USD), even comes with free shipping! Great for laptop users.
http://www.amazon.com/Corsair-VSA4GSDSKIT667C4-PC2-5300-200-Pin-Laptops/dp/B00160YDSS
http://www.amazon.com/Corsair-VSA4GSDSKIT667C4-PC2-5300-200-Pin-Laptops/dp/B00160YDSS