Every time you send or receive crypto, you will have to pay a network fee, which goes directly to the miners to keep the network working.
Fees are meager compared to the traditional banking system; making crypto very attractive.
Consult this website for more information:
Here is the list of the average fee per transaction as of today the 29/11/2019:
- Bitcoin (BTC) = $0.392$
- Ethereum (ETH) = $0.058
- Litecoin (LTC) = $0.0037
- BitcoinCash (BCH) = $0.0006
- Ripple (XRP) = $0.0002