I also bought from www.Lightings.com.sg
Shall post my quote here to save others the problem of going there just to get quotes.
Downlights - 2*13 ATCO OSRAM at $19 each (including casing)
Kitchen lights - 50W at $46 each
Studyroom - 50W at $50
Price are fixed and delivery is at $18. Please check their lighting as soon as you can as we requested to change some lights twice. We didn't had any problems changing the lights but if possible, pay the $18 as they would change and deliver them to your place if the lights have any problems. No issues when changing the lights, almost no questions asked. =)