I have had purchased from them before (very good lights!) BUT that was when they could provide lights in 220Vs (instead of 120V). They have indicated that they will no longer produce 220V versions and rather concentrate on the US market ie no more international customers.
The only other solution is to use VPOST or send it to a friend who is coming back to singapore.
PS you will need a convertor for it, I am pretty sure it would be almost as big as the lights as the amperage is quite high (i think).