CPU+ Mobo: ASROCK H81M-HDS + i5 4460 (320)
RAM: G.SKILL PC 12800/1600MHZ DDR3 CL11 VALUE RAM (8GB) (98)
GPU: SAPPHIRE R9 280 3GB DUAL-X (285) (lazada.com)
SSD: SAMSUNG EVO 120GB SSD (109)
HDD: TOSHIBA 1TB 7200RPM (69)
DVD-RW: LG 24X DVD-RW SATA OEM (25)
PSU: SUPERFLOWER HX 600M GOLD MODULAR (109)
Case: CM K282 / K350 / K380 (55)
OS: WINDOWS 7 HOME PREM (125)
Total cost: $1195
Unless otherwise stated, buy at PC Themes, #04-15, and ask for discounts. DIY yourself. If you can't into DIY, get PC Themes to assemble for you for a fee.
Disclaimer:
1) Unfortunately, due to lack of budget, the resultant rig is more of a gaming rig rather than a proper video editing rig. The rig is still good for light-medium video editing though.
2) The lack of budget also means that a more powerful GPU cannot be added into the rig. However, the R9 280 is still capable of High settings in Battlefield 4, Call of Duty and Crysis.
3) Got Mastercard? Consider buying the GPU, SSD and PSU from lazada.com on a Monday and get 10% discounts when you pay with a Mastercard. Do note that discounts are capped at $50 per transaction and you may have to buy these items seperately.