I finally got what I needed - A wireless flash trigger.
This item is so hot that each time I visit the shop, it is sold out. Well this time I confirmed the stock availability with the boss before I even go there.
The package I bought is 1 transmitter + 2 receivers. And it is bundled with some sort of cord that I do not know what is it for. The receivers runs on 2x AAA Batteries (per receiver) while the transmitter runs on A23 Battery.
The boss is a nice person, he even gave me a free battery holder for my AA Batteries (used for my flashgun).
Price: RM 160
Discount: RM -
Net: RM 160
Total spending to date: RM 5,902.75