Choosing a pet ID tag for your Combai is like buying insurance – you do so with the faith that you’re never going to need it. The “possible cost” of not having a pet ID tag is more expensive than the “actual price” of purchasing the pet tag itself.
The kind of pet identification tag that you buy is important, so take 5 minutes or so to think it through. Whimsically choosing a collar tag just because it’s inexpensive or cute usually proves to be unwise, in the long term.