You can find domestic deals a lot cheaper than that.
You might just want to shoot for a regular "briefcase" CD deck instead of the pricey Super CD player.
I bought a complete briefcase setup (complete with CoreGrafx *and* CD player), boxed, last year for $145 shipped. Since I didn't need the CoreGrafx I sold that off on eBay and the auction ended at $50.00. So I essentially got the interface deck, CD player and original box for $95 shipped. It wasn't a steal of a deal, but probably an average of what you should be paying if you deal domestically rather than f*cking with outrageous shipping prices from Japan.