All mine were from when I was a kid and the rest were things I got at garage sales/flea markets etc. I think the only complete figs I have are Zartan, Snake Eyes v3, Scarlett, and Storm Shadow v2. Those I got at a convention.
I likely wont ever complete the rest. I am starting to think about replacement parts for a few. My Snake Eyes v2 has a broken crotch for example and thats bugging the crap out of me. I've actually substituted it for an extra Iron Grenadier crotch I had and painted the red belt black. But there are a few others with broken thumbs and crotches too sadly.