how much was the cost of the button box and was it hard to build. im considering building it

Quote from brt900 :

how much was the cost of the button box and was it hard to build. im considering building it

http://www.leobodnar.com/products/BU0836/
BU0836 Precision joystick controller = 32 Euro
36x buttons and switches + some switch covers + USB cables + some elctronics&components = cca 40-50 Euro
steel material and manufacturing = 70 Euro
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summary = cca 140-150 Euro
not hard to build it, it depends on abilities/resources/skills
and many endurance/patience and precision work