I think that makes the price of bitcoin has a very expensive value because bitcoin has a very high demand and is influenced by the existence of a limited total supply so that the price of bitcoin can be very expensive like this.
It is expensive also for one more reason. There arent enough Bitcoins for everyone and it comes from the fact that only 21 million bitcoins will exist in total and not a coin more. Now about 7.7 billion people live on the planet, and if you give each of them one BTC, then they will be enough only for zero 0.27% of the world's population. Many guys have already accumulated much more than 1 BTC, on some wallets coins are kept in thousands.