ibuypower.com.au currently have a %10 off sale. You also get a $50 'www.game.com.au' gift voucher and they have free shipping as well. I compared this to other online sites and it always came out cheaper.
I put a quick custom gaming order together and compared to one built by MSY. MSY was $32 cheaper, but didn't include shipping and a 3 year RTB warranty which the 'ibuypower one does.
So for anyone looking at getting a new box who doesn't live close to an MSY store, this sounds like a good option.
The test order I did was:
Coolermaster CM 690
550w PSU
Intel Core i5 750 2.66Ghz 8Mb Cache Quad Core 4 Cores/4 Threads
Gigabyte P55A-UD3P Motherboard
4Gb (2x2Gb) 1333Mhz DDR3
ATI HD5850 1Gb DX11
Western Digital WD10EARS 1Tb (1000Gb) 64Mb Cache Caviar Green
BenQ DW240S Dual Layer 24x DVD+-RW
Microsoft Windows 7 Home Premium 64bit
3 year warranty
$50 gift card
=$1643 - %10
=$1478.70 delivered
sounds like an ad