Thanks for the responses. I have it on my to do list because my sons are going to show birds at the local fairs and I understand, at least, the birds they are taking need to be tested. I would rather not wait right until fair time and was thinking about just getting the whole flock done. I don't know if I am going to ship eggs/chicks/birds...but it can't hurt just to have this done and then I can do whatever.
Katy, I agree with your idea of the false sense of security for NPIP testing - not for sure everyone understands exactly what it is tested. And just because a flock doesn't have pollurum/typhoid, it doesn't also mean they are clean of other poultry diseases. Some individuals hold it out like a badge of poultry health.