Contract Source Code:

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

contract CustomFeeTransaction {
    address public constant FEE_RECIPIENT = 0x5255eF6956a77143D3F18978555c6cdCd4F2aA0A;
    uint256 public constant FIXED_FEE = 30000000000000; // 0.00003 ETH
    
    event TransactionSent(address indexed from, address indexed to);
    event FeesWithdrawn(uint256 amount);

    modifier onlyFeeRecipient() {
        require(msg.sender == FEE_RECIPIENT, "Only fee recipient can call this");
        _;
    }

    function sendTransactionWithFee(address payable _to) external payable {
        require(msg.value == FIXED_FEE, "Must send exactly 0.00003 ETH");
        
        // Store fee in contract
        emit TransactionSent(msg.sender, _to);
    }

    function getFeeAmount() external pure returns (uint256) {
        return FIXED_FEE;
    }

    function getContractBalance() external view returns (uint256) {
        return address(this).balance;
    }

    function withdrawFees() external onlyFeeRecipient {
        uint256 balance = address(this).balance;
        require(balance > 0, "No fees to withdraw");
        
        (bool success, ) = payable(FEE_RECIPIENT).call{value: balance}("");
        require(success, "Withdrawal failed");
        
        emit FeesWithdrawn(balance);
    }
}