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$12
Bought from Amazon originally, used for the past two years, works great. Lights up your desk! Rotates at three pin joints along arm, has two brightness settings.
I think it's this:
http://www.amazon.com/Living-Accents-Halogen-Architect-Adjustable/dp/B0044FZ5SE/ref=sr_1_1?ie=UTF8&qid=1371167523&sr=8-1&keywords=HALOGEN+DESK+LAMP
Please do not message this poster about other commercial services.