https://www.mctrpayment.com/pdf/CA_MCTR_Fee_Trans.pdf
For domestic transfers, appears free per your linked article:
"As long as you have your bank’s routing and account number, you can transfer funds to your bank account without paying a fee in the following ways
Transfer funds online at mctrpayment.com Transfer funds using the Money Network Mobile App Transfer funds by calling 1-800-240-0223"