Storage and Price
Both Google Drive and Dropbox offer a free account, Google with 5GB and Dropbox offering only 2GB. With Google, when you upgrade your Google Drive to one of their premium plans, you also add 25GB of Gmail storage on top of the 25GB of storage, all the way up to 16TB of paid storage. Dropbox doesn’t offer an email service so they can’t compete with this added feature.
The monthly cost for upgraded Google Drive accounts ranges from $2.49/month to nearly $800/month. Here’s the cost-per-month break down for Google Drive.