If you are looking to Premiere Pro: The best approach is to subscribe to Adobe Creative Cloud . For a monthly fee, you get the legal right to use the software. If you specifically need CC 2018 for a project, you can use the Creative Cloud app to install an older version within your active subscription, rather than trying to buy an outdated license from a reseller.
Desde hace tiempo, ya no es posible realizar una "compra única" de una versión específica como la de 2018. Para acceder a Premiere Pro, debes suscribirte a un plan de Adobe Creative Cloud Acceso a versiones anteriores: comprar adobe premiere pro cc 2018