So what did it cost?  

Here is a general breakdown of the costs:

• Construction (MDF, ply, casters, paint, etc.) $ 221
• Computer (box, upgrades, monitor, etc.) $ 26
• Arcade (Artwork, T-Moulding, Joysticks, etc.) $ 372
• Electrical (power strip, relay, connectors, etc.) $ 38

Total $ 657 USD