Gosh, I can't believe how long its taken DC, but they finally put this out - the TPB softcover version of The Search for Kryptonite (otherwise known simply as "K" during its original publication run).
I must have waited a year (imaginarily or really) between the hardcover release and this new TBP softcover release. I quite starkly refuse to buy hardcover collected editions because I just don't like to read them - they don't hold nicely in the hands. I was tempted everytime I walked by a copy of this in hardcover, always thinking at the back of my head that the softcover TBP would not be released.
Great that I resisted my temptation and now bought the softcover copy today. Hurrah!