It is possible to upgrade from a neighborhood plan to a city plan while only paying the difference between the neighborhood and city plans.
For example, if you have subscribed to Brooklyn in New York, to upgrade to the city plan, all you have to do is go to the overview page for New York, click on purchase, enter your password, and then click purchase. The savings will not be reflected on the payment screen but will be in the receipt that is sent to your email address.
If the charge was not prorated, then please reach out to our customer success team here, and they will be able to assist you.
You can also upgrade to a state or countrywide subscription or a global plan by contacting our account executive team here.