It is valid, however, we allow usage of our API only for users who spend over $1000 with us because it requires a lot of assistance to set up. We don't guarantee availability of the IP once it is S-flagged, we guarantee that when it comes back online you will be able to use it. Our proxies go up and down all the time and if you flag it, you will be able to use it when it comes back, all you need to do is ping the list all the time. Targeting options exist, our plans are priced depending on geolocation. Please check plans on our website.