A few things to keep in mind about market cap and trading volume:
1) Different data websites may use different methods to calculate circulating supply, so the same coin may have different market caps on different websites.
2) Total trading volume across the market is the sum of the volumes on all trading platforms, while the volume on an individual exchange reflects only the buying and selling there.
3) Judging whether a coin is “cheap” based only on its unit price is meaningless; you need to consider circulating supply and market cap as well.
Current price: $BTC is trading at 82092.74, down 1.27% over 24h.