As far as the original intent of this post... (hmm, what was that again)

I started an alt on KJ on the same account as my main AH char on my old realm and used Auctioneers Arbitrage function with KJ data specified in the "also use" data section. It came up with nothing, at all, in the entire range of acutions, that would sell even 10% better on KJ than my home server.

Since I didn't believe this, of course, I spot checked most of the main expensive items I had been stockpiling and found it to be true. So I sold as much as I could stand waiting for and just brought the gold instead.