Power Cord Charger

Power Cord Charger
need a power cord for a Dell Inspiron 5100 .. but not from dell .. costs too much!?

Just bought a dell 5100 for older my son, but has no power cord. looking at the site of ravines, they want 69.99 for it, and the opinions of the users are horrible. well, if not to be a "good" cable no matter what, then I at least like to make it $ 70 cheaper .. know of a site that sells power cables for the subject of other businesses? or maybe a docking station battery charger? any information would be appreciated!

Here is one on amazon for cheap: http://www.amazon.com/gp/product/B002AQ7L5E?ie=UTF8&tag=monteblog-20&linkCode=as2&camp=1789&creative=390957&creativeASIN=B002AQ7L5E

Nintendo DS Lite NDS Emergency Charger (yellowmangoes.com)