Just chatted with AC Support this morning to get a server credentialed. They are not charging to credential a new machine as far as I know. I believe they also said, they would cover it if there was an issue during the installation. I haven't tested that yet.

Here's a process to make credentialing go faster. The tech should be able to get it done in a few minutes if you take these steps.:
1. Request install key and setup AC on your new main computer/server. Run through the initial setup. You can enter any info. Make sure you're installing the same version you had before to simplify the restore.
E.g. 9.4.2 on the old machine and 9.4.2 on the new machine
2. Backup your database without Imported Items (Typically <1GB Backup)
3. Backup your SystemSettings XML file from the old server
4. Place both on the desktop of the new server.
5. Contact AC Support via Chat . Be sitting at the main computer if possible.
6. Let AC do their thing.
7. Run the Backup Restore Utility (should only take a few minutes without the II)
8. Test AC
9. Copy the Imported Items folder from the old server to the new one.

Pass these onto your IT in case they have to do an emergency recovery from the AC Backup. It will expedite the restore process. Restoring with II can take hours if there's a lot of items which is why it's better to copy them over manually. Also, you don't have to create massive backup files.