The PS3 80GB Motorstorm Pack was ranked 105 on the amazon sales charts. Now, it's at number 18. This means sales or the 80GB model have jumped 483%. A pretty impressive jump -- and we expect sales to grow. Sony's $100 price drop is making the system that much more attractive to consumers. How will they respond to the $399 40GB system when it releases in a few weeks?

Note: amazon.com sales charts are updated hourly.

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