Samsung Notebook RAM help

[handsome]

i have a Samsung Series 3 Notebook for which i want to purchase another 4G RAM stick. The folk that the local samsung people put me onto, CRT, want R700 for a 4G stick. I know one can get 4G notebook sticks for less than R300. But i am struggling to find anyone locally online that stocks a stick for the Samsung. The notebook model no is NP350V5C-905ZA, and the RAM part number is  AM1U16BC4P2-B19C. Does anyone know of anyone i can go to?

 

[Batman]

 

[Drukkie]

 

[LAV]