I believe there are only a few in circulation. I know kyleep got a few for buying Timeless first... I don't know anything else.
Collin apparently put a few into circulation a while back; I know that zeppy has 2 thought he bought for 14k each. There is also bedrock going around. Kit mvp used to give you bedrock from what i have heard.
Geez, what's with all the rumors lately? Ohh that protection x was from narnia... Or this the bedrock & creeper egg thing! Next thing you know: ooh I heard in pvpfest there was a god sword going around... Till a noob got it & burned in lava. Creative: ooh I heard that there was a monster spawner somewhere... Survival: oh I heard there's a emerald chest plate somewhere... (I don't know! XD)
I know. Is t it called Katniss? Didn't mean to rate it dumb. It's my phone Sorry! This should fix it...
Creeper heads seem cool to own but I wouldn't buy one for myself. I have one piece of bedrock, don't know what I'm gonna do with it.