The event you mentioned is actually the South East Asia bodybuilding event to be held in Pattaya, Thailand.It is held everytime bodybuilding is not included in the SEA Games (depending on host country to have it in the games).Most times it is held with the official games but in the event it is not included into the games by a host country, then a saparate event is put on for the athletes.
No not only the SEA games, also included is an international open contest for any bodybuilder in the world, here are details including the prizes
ABBF 50th Anniversary Invitational INTERNATIONAL Championships
(Open Category) which open to the any country in the World
Prize award:
1st place Winner get the prize of US$5000
2nd place Winner get the prize of US$2500
3rd place Winner get the prize of US$1500
4th place Winner get the prize of US$500
5th place Winner get the prize of US$500
6th place Winner get the prize of US$500