Sets, expansions, special sets, collector numbers... Pokémon TCG terminology can look more complicated than it actually is.
If you've ever looked at a shelf full of Pokémon products and wondered why six completely different boxes apparently contain cards from the same thing, you're not alone.
Here's the straightforward version.
What is a Pokémon TCG set?
Pokémon regularly releases groups of cards together under a particular name.
These are normally referred to as sets or expansions.
An expansion has its own selection of cards, usually with a recognisable visual theme and set symbol or code.
Products associated with that expansion can then contain booster packs from it.
So an Elite Trainer Box, Booster Bundle and collection box might all look completely different on the outside while containing packs from the same expansion.
What are collector numbers?
Look towards the bottom of a Pokémon card and you'll normally find a number.
Something like:
64/182
The first number identifies that card within the set.
The second number represents the numbered portion of the main set.
You may also encounter cards with numbers beyond that stated total. These tend to be higher-rarity cards that sit beyond the standard numbered set.
Collectors often call these “secret” cards, although Pokémon's rarity systems and terminology have changed over the years.
Why are some sets different?
Not every expansion launches in exactly the same way.
Some are regular expansions with widely available individual booster packs and booster displays.
Others are treated as special expansions.
With those, booster packs may initially only appear inside products such as Elite Trainer Boxes, tins, Booster Bundles and collection boxes.
This is why you can sometimes search for a new set and find plenty of products containing its packs, but no normal individual booster box.
Nothing has gone wrong. Pokémon just likes keeping everyone on their toes.
Do different products have different cards?
If the booster packs are from the same expansion, they're drawing from the same set of cards regardless of whether the pack came from an ETB, Booster Bundle or another official product.
Buying the more expensive box doesn't secretly unlock a better version of the set.
The differences are usually in how many packs you receive and what additional items come with the product.
Card Avenue tip: Pick the set first, then choose the product format that suits how you want to collect it.
Do you need to collect the whole set?
Absolutely not.
Some collectors enjoy completing a full set and ticking off every card.
Others collect only the artwork they like.
Some focus on a particular Pokémon. Others collect illustration rares, promotional cards or sealed products.
And some people open packs, pull something shiny, put it on their desk and are perfectly happy with that.
All valid.
Why understanding sets helps
Knowing which expansion a product belongs to makes shopping much easier.
Instead of buying a random box because the packaging looks nice, you can check whether the set inside actually contains cards you're interested in.
That becomes particularly helpful when several Pokémon TCG expansions are available at the same time.
Once you understand that, the wall of different Pokémon products starts looking considerably less confusing.