How does a tariff change when the number of items in a feed is decreased/increased?

Tariff is set automatically after registration and feed import (it is calculated as a sum of all items in all output feeds, see previous questions).
In case you intentionally decrease the number of items in your feed, you need to let us know at [email protected], so that we can invoice you the correct price.
This function is not automated intentionally, because short-term feed outages could result in unnecessary fluctuations.
If the number of items in your feed increases and reaches a higher, more expensive tariff, it is updated automatically at the end of the month.