Best way to find where it is purchased is look deeper on where th website gather the infos about the coin. Websites which displays the prices rise and fall mostly refer to where the coin is purchased
You have to show the announcement thread link instead of asking people to the op to find it by surfing it. I have tried it but unable to reach the thread with the Google results. I have tried to gather information in coinmarketcap and found there was the 6 to 8 percent dump in the price chart. but the value is around 14 USD per coin. By analyzing the historical chart value bumps properly in the chart.
https://coinmarketcap.com/currencies/altcoin-alt/historical-data/