Calculate ticket sales by using SUM in SELECT clause
Try this:

SELECT 
A.ticket_type_id, 
A.tickets_paid, 
A.tickets_paid*B.price as amount_paid
FROM
(SELECT tt.ticket_type_id,
COUNT(tt.ticket_type_id) AS tickets_paid 
FROM tbl_tickets t 
    INNER JOIN tbl_ticket_count tc 
        ON t.ticket_count_id = tc.ticket_count_id 
    INNER JOIN tbl_events_new e 
        ON tc.event_id = e.event_id 
    INNER JOIN tbl_ticket_type tt ON 
        tt.ticket_type_id = tc.ticket_type_id
WHERE 
    e.event_id = 164 
    AND t.pay_status ='paid' 
GROUP BY tt.ticket_type_id) as A
INNER JOIN tbl_ticket_count B ON 
        A.ticket_type_id = B.ticket_type_id