Bestbuy offers Hasbro - Legends Iron Man Electronic Helmet - Multi for $69.99 (orig. $99.99) with free shipping.

Product Description:
Ramp up your superhero cosplay with this Hasbro Marvel Legends Iron Man electronic helmet. Glowing LED eyes, sound effects and a magnetized removable face plate add realism to your role play experience. This detailed Hasbro Marvel Legends Iron Man electronic helmet is made at a 1:1 full scale for an authentic look.

• Marvel Legends: Iron Man Electronic Helmet
  Allows you to recreate Iron Man action with this 1:1 full-scale helmet.
• Movie accurate effects
  Including lights and sounds.
• Magnetized faceplate
  It can be completely detached from the helmet and then connected to the top.
• Runs on 3 AAA batteries (not included)
  For simple battery power replenishment.