We're glad you asked! Spritz charges a small fee to use our service, which you can learn more about here. Spritz fees will never be more than 1.5% of your total transaction amount.
Gas fees or network fees are a fee that you pay to make a transaction on a blockchain network. How much you will pay in gas fees varies based on the network you're using to make the transaction and how much traffic is on the network at that time.
Some networks, like Ethereum, can have high gas fees if the network is particularly busy. Spritz has no way of controlling how much you will pay in gas fees. If a gas fee estimation seems unusually high, try the payment again in a few hours to see if the fees have decreased. You can check the gas fees on Ethereum before starting a transaction here and here.