Well my transaction went smooth as silk with Guitar Shogun. He quoted me a price including shipping, i sent him payment via Paypal, and I had my bass 5 days later. Other than Ken, the only other dealer I've seen selling lefty MIJ stuff is this guy on ebay, and his prices are comparable or a little higher. Here's a listing for a sunburst '75 J. he's also got lefty Jaguars, Aerodynes, and a Jaco fretless listed right now too:
http://cgi.ebay.com/Fender-Japan-75-Rei ... dZViewItemUnfortunately, the yen to dollar rate is ridiculous right now, even higher than when I bought my bass. I'd wait it out personally, though I know the feeling that when you've got to have it, you've got tto have it!