I have just re-read this thread for about the fourth time.
Partway through, Shevia asked if someone had once had a thread about having a minimum price for what you bought, and the answer is yes, Jenn did, and she has linked here up-thread to the article that prompted it, her first link about having a minimum of $150 as a price point, enough to make the writer think about how much he really needed the item- in regards to sustainability.
Interesting to re-read that.
I still think for me it may be love of the item that may make me go higher, but on a rare occasion and carefully considered, if I just can’t get the item out of my head. And even then that’s only to try it on! I would really have to know it would get worn again and again to go above my self-imposed limits, since I so want to wear everything lots of times, hopefully for several years.