Pisser, nice markup, must be pretty labour intensive installing those LEDs 

You'll have to ask the guy in Germany who originally made them, pinballdecals is simply buying them from him and adding his own markup. 

http://www.wolfsoft.de/shop/index.php/cPath/325_328

A $5 mass produced plastic toy with some leds added turns into a 99Euro pinball mod, which then turns into a $199US "Limited Edition" pinball mod.