There was a stall with a lady selling off the remains of the stock of a sewing shop which has closed. It all looked very old and worse for wear, but I had fun fossicking through it all.
I thought about this purchase for ages, to see if it met the criteria, and in the end I decided that it did. I thought it met the criteria because it may as well have been someone's personal sewing supplies they were selling off - no-one was going to be re-ordering the stock to replace what I had bought so therefore I would not be adding to consumption/manufacturing. Ok, I spent waaaaay too long thinking about it, but that is the concise version of my decision. Feel free to disagree or ask for a wordier explanation, I just don't want to bore you with my internal dialogue.
I had been wanting some fabric dye for ages, but I didn't see how I could get some unless I happened to trip over some at an op shop. And I need some thin-ish elastic for making shoes since I still haven't found my previous supply in my study-clean-up. I had to hold back from getting more colours of dye, and just limiting myself to what I thought I probably could and would use this year. I abstained from purchasing cotton reels and lace and all sorts of other goodies. I didn't know I had such self-control.
Very pleased with my bargains. $5.50 all told.