My exception this year was shoes.*
Because of my shoe size, the most-optimised way for me to buy shoes is from on online shop that makes good quality, leather shoes to order. They're not even more expensive than other leather shoes - they are more expensive than crap quality, borderline-disposable, mass-produced shoes, but then they also last about ten times longer if you take care of the leather and put topy soles on them.
I've been very slowly buying the shoes I need, buying a pair each time I can't possibly put it off any longer. Which is an okay strategy. But now the online shop has sent me an email letting me know that the price for my shoe style is about to go up by $20 a pair, so not only am I going to buy the two pairs that I couldn't put off any longer anyway, but I'm also going to bring forward one pair while the price is lower.
At least with my shoe strategy, there should be a point at which I've got 'enough' and as long as I'm replacing the topy soles as needed, I should only be buying a pair every few years when one wears out completely. It makes me wish I hadn't been buying cheap, crappy shoes for all those years or I'd already be at critical mass for good shoes.
*Until the point when I've lost enough weight to NEED new clothes, because duh, then I will buy some clothes.