Found this on another site:
Verizon Wireless will be offering the following plans for Chromebook users:
An unlimited day pass for $9.99
1GB of data (30 days) for $20.00
3GB of data (30 days) for $35.00
5GB of data (30 days) for $50.00
Wondering how much data would be used if only for browsing, and no downloading. And if you can switch off 3G when using Wi-Fi?