Thanks Dane! I was thrilled to get it at that price. My impression was that the Mazda dealer didn't realize the significance of the ZHP package. God bless 'em! Also, I did the negotiation by email, may have helped. Surprising that they didn't try to call me and squeeze a few more bucks out.
I remain perplexed as to what the heck a used ZHP was doing on a Mazda lot.