I had just done my plaster ceiling last week. My hse is double story corner with around 3000 sqft build up. Design is mix of flat/downlight and light box, depend on ceiling shape. 2 suppliers from Lowyat site quoted RM 77XX and RM 55XX each. So much different!!! So please get at least 2 quotes.

Date to complete also big different, one said 2 weeks and another one just need 1 week.

Off course I go with cheaper & faster one:  And he completed it in 2 days!!! All worker are chinese and workmanship is good too. really superman.