This sounds like a very good deal to me.
For as long as it's been called "Dropbox for Business", yes, but that only started in April of this year[1]. Prior to that, it was called "Dropbox for Teams" and it was $795/year for 5 users and 1 TB[2].
However, like I mentioned in a reply to kondro[3], while they advertise Dropbox for Business as "unlimited", you have to contact them to justify anything beyond 1,000 GB + 200 GB per user license after 5.
[1]: https://blog.dropbox.com/2013/04/say-hello-to-dropbox-for-bu...
[2]: https://blog.dropbox.com/2011/11/introducing-dropbox-for-tea...
Been in the start-up situation twice where it's only 3 of us at the start and no idea how long we have to survive on a minimal budget.
Of all the services we used, Dropbox by far asks for the biggest and completely blind upfront commitment.
We just need the service Dropbox offers (and preferably from Dropbox, since that is so ubiquitous it makes it easy to use with third parties and integrate with other services).
But we can have either individual accounts (which doesn't scale, and doesn't have the convenient team-features) or commit to the whole $795/year and hope we'll soon get to the point where the benefits outweigh the costs.
Dropbox for Business is an all-or-nothing package-deal with 3 separate benefits (features, volume and accounts) which cannot be purchased separately even though most clients only need one or two in limited quantities. And to top it off it's an upfront whole year commitment.
It's dramatically different from the pay-per-use proposition of any of the other SaaS products we use.
I've done the "what do we want to get started" math twice in the past few years, and Dropbox for Business stands out like a sore thumb.
Sorta: it's technically "unlimited" space[1], but they want you to contact them and justify any usage after 1,000 GB + 200 GB per user after five[2]:
> Dropbox for Business equips you with all the space you need. You'll be given 1000 GB when you start your account (5 users). Each additional license you buy will give your team 200 GB of additional space. If you come close to approaching your limit, contact us and we'll work with you to accommodate your storage needs.