B&H Photo and Amazon have the Colormunki Photo on sale for $399 (Normally $449) until 11-30-2013. I've seen it higher in some stores at $499 so $399 is pretty good deal.
I went from DataColor's Spyder (I had two models of them.) to the Munki and it is far better, imho. If you do it right in the Epson driver when it pops up for printing, one can select 2 per page in the driver setup and print one target on one end of the 8.5x11 paper, read it, and flip it and print the second one at the opposite end, read it, and let it write the ICC profile.
I did it today on one sheet of paper. Just need to place a flat edge guide about 7/8" below the point of the last chevron's point in the line horizontally and run the Munki across it slowly. Just keep the white flashing dot off the edge of the row and release the reading button once past the final one and into the white paper edge at the end of the row. I wasted a lot of paper doing the two full sheets per calibration prior where one will do it along with a straight edge for a guide.
SG