This is the 14740th most frequent Polish word.
płatne
"Paid" or "payable."
Here, 'płatne' is an adjective referring to compulsory payment for participation in the event.
To wydarzenie jest płatne.
This event is paid.
In this case, 'płatne' describes the delivery service as being associated with payment.
Usługa przesyłki jest płatna.
The delivery service is paid.
Here, 'płatne' is used in a question to inquire whether usage of the application requires a fee.