Huh? i didn't know that the Note 2 has wireless charging? I read that you can mod the Note 2 to have wireless charging but it does not have it built in. Then again, I maybe wrong so don't take my word for it. The S3 also can do wireless charging but it's based on using a wireless charging cover (which is similar to a wireless charging cover for the iPhones).

Yes, for both S3 and Note 2 probably, the wireless charger is not built-in, you need to buy a wireless charging covere. As for the Lumia 920, it's built-in   

I don't know the price for Malaysia but I bought mine in Saudi for SAR245 (or about RM200) so I suspect it will be in that range for the wireless plate, it's going for 40 pounds in the UK which is also around the 190-200 ringgit range.

For S3, you will need a wireless charge compatible back plate/battery (not sure if it being released in the market already or not).

For Lumia 920, it is already integrated in the phone. For Lumia 820, you also need to buy and change the back plate.
http://www.nokia.com/my-en/products/accessory/cc-3041/

went to nokia store today
they say the official launch is 7 january
as for the wireless charger,
they arent so sure

i am ready to grab 1 red lumia when 7 january    

duno i ask nokia malaysia fb page they reply me with: depends on your local operators and stores