M-Edge is actually giving away the E-luminator book light for free with every e-reader cover purchase
I bought one before for my PRS-300 but never liked it very much - it didn't seem bright enough for the PRS-300. Surprisingly though, it was a good match with my Kindle Touch. It gave my KT background an almost white cast, compared to my Travelflex, which gave my KT screen a purplish hue. (I loved the Travelflex with my Sony PRS-300 though).