Some publications require delivery through a third-party system or gatekeeper service, which incurs an additional charge.
For example, Media Huis Ireland (Irish Independent & Belfast Telegraph). It is rare, but other publications are operating similar services.
To know whether there are additional charges, we indicate on the publication page when an ad needs to be delivered using a third-party service; however, due to the complexity and variation in pricing, the pricing for third-party services is not shown at the point of delivery.