I wanna buy some CPChain (CPC) but I'm looking at
https://www.livecoinwatch.com/price/CPChain-CPC And I notice the huge difference in ETH, BTC and fiat pair.
Why is this? ETH has a +70% change in the last 30 days.
While BTC and usd only have about a +4% change.
Since it is running on a free market, a huge difference in different pairs is not that uncommon. On a free market, the pair with most volume is the one who is constantly being updated and the pair/s that have low volume can sometimes differ in price. Also, the price is dependent on what price the market is willing to buy and sell a certain coin in a certain pair. From the statistics you gave, my only conclusion is that ETH pair had a +70% change instead of only +4% like the other pairs because it had more trading volume at that time and traders are willing to buy and sell at a higher rate than usual in that pair.