Mine cost $675NZ plus $147 freight and agents fees. ($18US agents fee buys a lot of NZ rupees, plus freight inside japan, plus international freight)
Somewhere around 30000 japanese yen at the time off Yahoo Japan
Its only missing the reg/rect.

Gotta get my cases machined for it...

I got mine through Andy C off this forum.

Its an '88 or '89 F3 electrics, the one that has the NF5 CDI and NH3 RC valve controller...
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The Chopster