SELECT count(*) FROM exhibition_record AS T1 JOIN exhibition AS T2 ON T1.exhibition_id  =  T2.exhibition_id WHERE T1.attendance  >  100 OR T2.ticket_price  <  10
Count the number of exhibitions that have had an attendnance of over 100 or a ticket prices under 10.
[Schema (values) (types)]: | theme_gallery |  artist : artist_id (text) , name (number) , country (text) , year_join (text) , age (number) | exhibition : exhibition_id (text) , year (number) , theme (text) , artist_id (text) , ticket_price (number) | exhibition_record : exhibition_id (text) , date (number) , attendance (text);