Add additional cost to Woocommerce booking cost during price calculation depending Persons Count and on ACF Meta Box Result

additional_woocommerce_booking_cost.php

<?php

add_filter( 'booking_form_calculated_booking_cost', 'prefix_calculate_prices_based_on_cars_count', 10, 3 );
function prefix_calculate_prices_based_on_cars_count( $cost, $book_obj, $posted ) {
	$additional_cost = 198.6; //Change Cost Here
	if ( 'public-tour' == get_field( 'oks-tour-type', $book_obj->product->id ) ) {
		if ( $posted['wc_bookings_field_persons'] >= 1 && $posted['wc_bookings_field_persons'] <= 5 ) {
			return $cost + $additional_cost;
		} elseif ( $posted['wc_bookings_field_persons'] >= 6 && $posted['wc_bookings_field_persons'] <= 10 ) {
			return $cost + ( $additional_cost * 2 );
		} elseif ( $posted['wc_bookings_field_persons'] >= 11 && $posted['wc_bookings_field_persons'] <= 15 ) {
			return $cost + ( $additional_cost * 3 );
		} elseif ( $posted['wc_bookings_field_persons'] >= 16 && $posted['wc_bookings_field_persons'] <= 20 ) {
			return $cost + ( $additional_cost * 4 );
		} else {
			return $cost;
		}
	} else {
		return $cost;
	}
}