Have you picked up Gran Tursimo 5: Prologue yet? If not, this might be an enticing deal for you. Online retailer amazon.com is offering a free $15 gift card with the purchase of Polyphony's latest racing game. Considering it only retails for $40, that's a pretty sizable bonus. (Strangely, buying this online at amazon would make it cheaper than buying it online at the PLAYSTATION Store ...)

The gift card will be included in an email sent out by July 29th, after purchase.

[Via Slickdeals.net]

This article was originally published on Joystiq.

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