See https://www.dropbox.com/help/363 for more information.
See the updated page here: https://www.dropbox.com/plans?trigger=nr.
Control-F "API access for data transport”
> Transfer data from your existing solutions with 25,000 included API calls per month. For additional data transport needs, contact our sales team.
Absent for individual accounts.
The API at https://www.dropbox.com/developers works for all account types. (Note that there are endpoints specific to team accounts when the functionality only makes sense there, like methods to add or remove members from a team, etc.)
The easiest/cheapest solution is to roll your own TOTP and build an app. This is useful for web, but may be pointless on mobile (if the mobile device is unlocked, then you have access to the TOTP app or SMS).
Business people probably looked at the cost per user and couldn't offer it at a lower rate.
If they implemented a provider, they will also charge for TOTP authentications.
"To give you the most powerful admin control and security features, we’ve upgraded you to Advanced at no extra charge. You’ll keep your original pricing until January 6, 2018. After that, your account will adopt our new storage plans and pricing. If you want to downgrade to Standard, you’ll have until January 6, 2018 to do so."
E: Wait, WHAT IN THE FUCK?
2FA is in the team tier, so it's a minimum of 50$ to get 2FA.
EDIT: Screenshots provided below now. They already rolled the page back.
The paid "pro" plan has no 2FA. "standard" does, but is a few extra dollars a month.
Beside the poorly named accounts, the idea of paying for security is a good one, but not when it affects the customer experience of securing their own passwords. Security in the infrastructure is an option. Optionally securing my account using 2FA is not.
Dropbox, you are being dorks.
Sorry, it's in Russian (and I'm too lazy to change browser language perfs), but you can find "2FA" there, the abbreviation was left untranslated.
That and showing prices "per month" on the billed annually plan just suggests deceit and greed. All of this confusion for an extra ~$25 per year per user.