Halp on build

hey, want adive on a build i found online and wondered what your opinion was and how I could make it better without sacrificing quality or spending much more

it's in AUD


CPU:     Intel Core i5 2400 $205
Mobo:     Asrock H61M/U3S3 B3 $75
RAM:     8GB (2x4GB) DDR3-1333 $39
HDD:     Seagate Barracuda 1TB $109
GPU:     1GB AMD Radeon HD6870 $169
Case:     Antec 300 $59
PSU:     Antec Neo Eco 520C $69 (BYO power cord)
ODD:    DVD burner $22
Extra:     Standard ATX Power Cable $2

Total:     $749

Okay I've done a bit of work on it  and come with this


CPU: Intel Quad-Core i5 2500K $255
Mobo: ASRock Z68 Extreme3 Gen3 1155 $140
RAM: 8GB (2x4GB) DDR3-1333 $40
HDD: Seagate Barracuda 1TB $109
GPU: 1GB AMD Radeon HD6870 $169
Case: Antec 300 $59
PSU: ???? $
Fan: Cooler Master Hyper 212 Plus $40
ODD: DVD burner $22

Total: $837 + ????

Can you recommend me a cheap 500W PSU that is compatible with this build?

Are all these components compatible?

Fuck off you oxygen wasting piece of corporate cock sucking consumer shit. Die in pain.