Price decrease will always happen especially after every airdrop. This is natural because there are a lot of bounty hunters enrolled in the signature campaign of PRiV who are just here just for the money and they definitely don't have any concern whether this coin will progress in the future or not. As long as they receive their token, they will go ahead and sell it right away, in any price at that given time. Expect this to be happening up until the last airdrop.

My view is, we will see the true value of PRiV after the airdrop has been given and the last batch of bounty hunters sold their coins.