Counterfeit or real?

Could anyone tell me whether the Arduino MEGA 2560 in this package is official or a clone? I looked on the "how to spot a fake" but could not make my mind up.

http://www.ebay.co.uk/itm/Official-Arduino-Mega2560-Super-Kit-Sensors-Stepper-Motor-LEDs-LCD-Breadboards-/160979358698?pt=UK_Computing_Other_Computing_Networking&hash=item257b1e13ea

They say its official. It seems official.

4tronix is listed as an official Arduino distributor.

If the seller isn't on the list then it's counterfeit. The Arduino guys are pretty diligent with keeping that list accurate.