Buying a pet ID tag for your Giant Schnauzer is like purchasing an insurance policy – you do so with the faith that you won’t need it. The “possible cost” of not having a pet ID tag is more costly than the “actual price” of purchasing the pet tag itself.
The kind of pet ID tag that you buy is important, so take 5 minutes or so to think it through. Impulsively purchasing a collar tag because it’s inexpensive or trendy usually ends up being foolish, in the long term.