I wouldnt buy it. Telling you the honest truth. If you like those kind of games and really mark out for it, then I guess go for it. But if you just play a game, watch the storyline, then done with it, I would suggest renting it. As my sister and I, my sister hardly plays video games, we beat the game within the week of the rental. It was a good game, great graphics, great game engines. Superior to anything XBox has right now by far. BTW-Cant wait for the full onslaught of PS3 games using all the resources they have. But Heavenly Sword is a good look at what games of the future using the PS3 will entail.
Rental = Definitely
Purchase = Personal Call, I can not recommend such however.