Confirmed reservations, imported from your listing's Non-Exclusive Inventory calendar (iCal) to Guesty, won't be added to your billing, even if your Guesty account is charged per reservation.
The payment processing for iCal listings is separate from reservations received via Guesty.
Imported iCal reservations will only block dates on your Guesty calendar.
Learn more about syncing a listing's iCal calendar.