bargain item; promotional item; article offered at a special price
Refers to goods sold at a discount or as part of a promotion, often in retail or service contexts.
That store sells bargain items every Friday.
This wine is a promotional item, so it's a great deal.
Compound of サービス (service, from English) and 品 (item, goods). The term reflects the idea of providing a product as a service or favor to customers, often at a reduced price.