Hello, I am in the process of adding a new local payment gateway provider/processor to my Woocommerce store called VivaWallet. They claim that WooCommerce themselves charges them something like 0.035% for every payment done directly in the woocommerce standard checkout, so to circumvent this and keep their own fees lower, on checkout they redirect to their own checkout page where the payment is handled. I have never heard of such a thing, is this true?

Thank you in advance for the attention and advice.