$400 USD, for a 16GB model that I've long since outgrown. The 64GB here in Canada, after my provinces' insane 15% sales tax, comes out to over $800. It's still a great bargain compared to the 6S prices around here (and the 7 is supposed to be ridiculous) but $800 is not pocket change to everybody.
Nevertheless I ordered a 64GB through my carrier. It still cost me $400 up front and the other $400 is spread out over two years of payments on my bill. The carrier and phone price climate in Canada is way worse than it was back in 2013 when I bought my 5S.
I honestly didn't expect SE prices to drop so soon but I figured it was worth an ask being so close to a product reveal. After weighing my options the 64GB SE is affordable enough at its current price for the quality of the phone. I'll easily get three years out of the SE like I did with my 5S. Can't wait to get it!