If you buy a Galaxy Tab 2 7.0 or Galaxy Tab 2 10.1, then Dropbox will give you 50 GB of storage for a year. After the first year you will be downgraded to 5 GB for another year. Then you will have the standard 2 GB. There are plenty of ways to get more free storage though. I have 10.2 GB free from referrals and automatically importing photos.
Dropbox was featured as App of the Week over a year ago. It is one of my most used apps on my Galaxy Tab and my primary way of transferring small files between computers and my Galaxy Tab.