Sorry, I have only just been directed to this thread, so thought i'd better reply. No tagadmin hasn't done a runner, I took the site down till tagadmin gets updated with main parts of Noms new updates, I didnt want anyone else to buy it till updates had been completed and tested.
This set of updates will be free to existing customers. New customers will see a price increase. TagAdmin will be fully re-written in near future, and at that point there will be a price increase for all customers as it will be a major version change, not just a update.
Dave