Buying a pet ID tag for your Aidi is like purchasing an insurance policy – you do so with the devout wish that you’re never going to need it. The “possible price” of not having a pet ID tag is more expensive than the “actual price” of purchasing the pet tag itself.
The type of pet identification tag that you buy is important, so take 5 minutes or so to think it through. Whimsically purchasing a collar tag because it’s inexpensive or pretty often ends up being foolish, down the road.