Stop work right now. Call your nearest Dick Smith Electronics store. Ask them if they have Brütal Legend on PS3 in stock. If yes, go there immediately and buy it.
Because it's only $15 during Dick Smith's current crazy-arse sale.
And because Brütal Legend is pretty damn awesome.
It's not the only game to receive a drastic mark down though, so check out the link below for the full list.