Translation guide
A store where most items are priced at 100 yen (plus tax). This is a common type of discount variety store in Japan.
Referring to the store itself in conversation or writing
The most common and widely understood term. Used in everyday speech.
I bought stationery at the neighborhood hundred-yen store.
Abbreviation of 百円均一 (all items 100 yen). Very common in casual conversation.
I'm going shopping at the hundred-yen store.
Written with Arabic numerals. Common in signs and advertisements.
A new hundred-yen store opened in front of the station.
Literally 'all items 100 yen'. Used in store names or formal descriptions, but less common in daily speech.
That store is a hundred-yen store (everything is 100 yen).
Mentioning a particular brand of hundred-yen store
Daiso, the largest and most famous chain. Often used generically like 'Kleenex'.
You can find anything at Daiso.
Seria, another major chain known for stylish goods.
Seria's kitchen items are stylish, aren't they?
Can Do, another popular chain.
I bought snacks at Can Do.
Items are typically 100 yen plus 10% consumption tax, so the actual price is 110 yen. Some stores now sell items at 200 or 300 yen as well, but they are still called 百均.
百均 is more casual and conversational. 百円ショップ is slightly more formal but still everyday. Both are widely understood.