Better list what you're looking for in quad/multi-rotor rc. Like whether this is for racing or just for flying, what is your budget, etc. Cheapest depends on what you need can be as low as RM400 - 600 to RM2k - 3k & the difference between them will be in range, capability, functionality, etc.

I'm newbie in rc quad (& anything that flying) but not new in rc.

If RTF...
Check this out (Eachine Racer 250). From 700 to 900 you can get one for almost ready to fly or ready to fly. This is mini quad I think. Just need to get 5.8GHz monitor.

If DIY...
- frame > around 200 to 600
- flight controller \w GPS > around 500 to 700
- motors + ESCs + props kit > around 600
- FPV kit (without camera & monitor/goggle) > around 300 to 400
- camera (e.g. SJ4000,5000,9000 or clone) > around 200 to 400
(you also will need micro usb fpv cable to connect the camera to fpv transmitter)
- monitor/goggle

I think you can fit everything in 2k budget.

I found this online store (https://averagedrone.my) which have good selection of what I want. This is not an endorsement. I have no experience buying stuff there yet. I'm pretty sure there's many rc hobby store around klang valley.