If I remember well one coin was costing you 5 BTC that time when it was sold during crowdfunding and like many I also couldn't afford to buy any. It went away from my interest since it was not in my reach. Today's price are offering you buy more than 2.5 PBT against one Bitcoin. I need to go through the previous updates by diving in this market.
i think from the time the ico happened , btc is only at less than 1500 USD. if we calculate the price of bitcoin from that time to now and compared it to the price of one primalbse token to now, it is still considerable if we might have good amount of primalbase if we buy for one bitcoin.