Bitcoin, Bitcoin Cash and Bitcoin SV are separate cryptocurrencies. Becasue of that, you can buy each of them for different price.
The differences between BTC, BCH and BSV are:
- Bitcoin - was created in 2009. Today 1 Bitcoin equals to approx. 39 260 USD.
- Bitcoin Cash - as Bitcoin has grown, the transaction speed of the network has become slower. Because of the slower transaction speed, some bitcoin miners and developers created Bitcoin Cash in 2017 as a hard fork from Bitcoin. The Bitcoin Cash network is able to process transactions more quickly than the Bitcoin network, so the waiting times are shorter and transaction processing fees tend to be lower. Today 1 Bitcoin Cash equals to approx. 452 USD.
- Bitcoin SV - was created as a hard fork from Bitcoin Cash in 2018. Today 1 Bitcoin SV equals to approx. 187 USD.
There are more forks of Bitcoin created, for example Bitcoin Gold
or Bitcoin Diamond