To send funds on digital currency networks, we must pay fees to miners who process the transactions. These fees do not go to Coins.ph. Ethereum fees may change over time.
To provide a simple analogy: Think of Ethereum fees as the fuel required for your vehicle (Ether) to reach your destination address. Gas limit would refer to your transfer's fuel tank capacity to reach your destination, while gas price is the default fuel price which is seen from the gas stations you've passed through.
Please see the complete list of withdrawal fees on our Fee Rates page.