Gah, yes, like Skylurker says. I find what I'm looking for, but somehow in the process forget that I found it and keep looking. To wit, I resumed my search for lace-up tall black boots to replace an old beloved pair from years ago. I ended up with a fab replacement, but also added tall burgundy boots (which are also replacing old burgundy boots with too-high heels). And then stumbled upon OTK taupe suede boots on sale that I could not resist.
The good news is that I've worn all three very happily already, and foresee lots more wear from them. But yeah, a search for one pair of boots yielded three.
I have to stop myself from duplicating a new item before I've really road-tested it, and sometimes even AFTER I've road tested it. I'm always afraid I won't be able to find anything better later on and feel like I need to hoard the good stuff that works for me when I find it, especially when it comes to difficult-to-find for me items. Truth is, even though I have a hard time finding good dresses, jeans, etc., I manage to find one or two a season that work for me, and that is plenty.