조사 수행 중에 필요한 물건이 있나요?

Not all evaluation missions require a purchase, and missions that do require a purchase are optional. Missions that do not require a purchase focus only on the customer service experience and do not require a purchase.

For missions that do require a purchase, the cost must be paid upfront as specified in the mission overview. The purchase cost will be refunded within 45 business days after the survey is approved.