Some cons and pros in the same time about this coin that make it's so rare (also answered the questions relates to the current block height):

• shitty miner with Ƶero support from the dev (optiminer - last time update source code is a month ago) - miner crash all the time
• Unique algo (till now) that make it so hard for popular miners support out of the box -> big farms don't want to take the risk to switch coin
• There is not any profit calculators that support zero (whattomine hidden it from the front page)
• 24 hours confirmation

I will just buy as much as i can to stock up even if the price goes back to $0.4. The demand is far more than the supply in this coin.