Like everyone else, I typically give in when the price of the item that I'm waiting on jumps. And it keeps on jumping. I was questing a Nitemare Scarf off and on for years just because the price kept going up, and then I'd give up after a while and buy something else. (Usually a lot of something else.) Of course, now it's dropped significantly (8M or so) from when I bought it. Or it had the last time that I looked.
La Bella Figura, too. I've been half-assedly questing this since it came out. When it went down to like 933K or so, I thought, "Ah-ha! I'll wait until 900K, maybe 875K...." and then it shot back up. So now we're circling each other, waiting to see what the other one is going to do. I can't justify to myself spending well over 1M gold on a pair of pants. I like some of the other poses, but it's mostly the pants.
So this is typically how it goes: It shoots up and I have to say, "Do I really want it that much? Really?" And sometimes I'll realize while I'm waiting for it to go back down that I don't like it that much, anyway. It looked pretty when it was shiny and new, and I kept holding onto that shininewness, never really noticing that it just wasn't that great/useful/whatever.
Slightly off-topic: Wendy eyes are pretty, and work with your avatar, so call it a win-win.