About $2000, because I lucked out and got the cabinet cheap. I had bad luck and the power source fried the day before a major tournament, so we ripped EVERYTHING out and put a TV, home stereo, amp in as well. (Normally you can just use the monitor that's in the DDR machine, its sound and amp as well.) You definitely need to buy a computer/decent graphics card, so that can be a good chunk of the cost if you do it that way. (And if you use the DDR monitor you also need to buy a special adaptor for the video signal to work) Ummm...aaand yeah, we used an Xbox controller instead of a JPAC because the JPAC always crashed, we basically ripped apart an XBox DDR pad and took the control thingy out of it, and then splices a USB cable onto the X-box controller, since it is basically USB with a different head. (It's easy to do, you just match the colors up, there are plenty of tutorials on how to do it) Overall, it's a big pain in the ass actually, and the machine we have now isn't even 100% stable. (It still randomly crashes once in a while, where the X-box controller will just random disconnect itself for whatever reason >< )
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