noun, noun or participle which takes 'suru'
buying by the carton
Colloquial term for purchasing items in carton quantities, often used for cigarettes, trading cards, or similar packaged goods.
タバコをカートン買いすると少し安くなる。
Buying cigarettes by the carton makes them a little cheaper.
トレカをカートン買いする人
People who buy trading cards by the carton are often collectors.