I was doing some wizard questing today and upon finding a black candy bar in someone's shop I decided to search "Black Candy Bar" in the shop search for the heck of it. Lo and behold I see one for 10k!

I'm wondering if this is just a glitch occurence or if this means they're finally searchable?

Well, they still aren't showing up for me, so I just it was just a lucky occurrence ^^

More than likely because of the achievement to feed 25 of them to your pet.

All random and slots items are like that and have been since I started. They don't show up in the shop searches if the price is over a certain amount.