iPhone 3G really cheaper?

iPhone 3G was announced at the WorldWide Developer’s Conference in San Francisco. The new iPhone is available in two versions: 8GB and 16GB. The 8GB iPhone 3G only costs $199, but is it really cheaper than the original one?

Let’s look at the math.

Old iPhone: $399 (for 8GB of storage), plus $60 per month for 450 voice minutes and unlimited data. Two-year total (since you’ll be signing a two-year deal for either handset): $1,839.

New iPhone: $199 (for 8GB of storage), plus $70 per month for a basic voice plan (presumably the same 450 minutes) and unlimited data. Two-year total: $1,879.

[via Yahoo]