I think CoinMarketCap.com is a good reference to Cryptocurrencies price and very accurate, every day I always open the CoinMarketCap.com for reference and make decision before trading. Thanks dev.
This is one of my two references whenever I comment in a particular coin thread and would like to start trading,they are up to date and 95% of the coins are here,you can easily tell if the coin you have is a crypto currency when you have it here,they only accept crypto currency that are open source and open traded,that is why coins like thebillioncoin cannot get in.