IPhone 3GS? Price + Apps request for information?

Hi! I am thinking of getting an IPhone 3GS, what does it cost and when you want to download and App, is it free?
Thanks so much! I really appreciate it!

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Answers:

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The cheapest I-phone plan will be around $90 a month. Since you need the data plan, the actual downloading of the apps is free. However you have to earnings for some apps. The costs of the apps vary.

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