Conditional Gateway Fees

function cl_remove_gateway_fees_by_cart_total( $fee ) {

    // enter the cart total for no gateway fees

    $limit = 5;

	// get the cart total

	$cart_total = edd_get_cart_total();

	if ( $cart_total >= $limit ) {

		// if the cart total is greater than or equal to the limit, remove gateway fees

		return 0;

	} else {

		return $fee; // else return the fee we had before

	}

}

add_filter( 'edd_gf_fee_total_before_add_fee', 'cl_remove_gateway_fees_by_cart_total', 10, 1 );

// Note: Snippet requires Gateway Fees 1.4.1 or above