Picking a pet identification tag for your Irish Terrier is like purchasing insurance – you do it with the devout wish that you won’t use it. The “possible cost” of not having a pet ID tag is more costly than the “actual price” of buying the pet tag itself.
The kind of pet ID tag that you buy is important, so take 5 minutes or so to consider it. Impulsively purchasing a collar tag just because it’s low cost or pretty usually proves to be unwise, down the road.