Hi all, need help on to ask on PLC downlights... I visited a few shops at Balestier... Decided on a particular PLC downlight (2x13w bulb) (model 8140) & went a few store to compare price... The most exp which 1 shop quoted was $38 while the cheapest we find (at lightings.com) was $19!!! Its double the price!!! Any downlight expert here to share some advice? Does the material, ballast & lighting tube plays a part for the price difference? Thks!