As far as sulfides go, you also just have to like sulfides. I don't, particularly, but fairly long ago, when I was collecting only handmades, I decided I really should have at least one. Mostly because of my self-imposed size restriction (nothing larger than 1 1/8") it was a tough project. Small sulfides were a little harder to find, and therefore more expensive. What a pain. But after a while I finally got a small dog sulfide in close to mint condition. And just as I suspected I would be . . . I was done, Still only have that one sulfide. But I didn't know they had fallen out of favor in general.
Alley was pretty hot a couple of years ago.