Work cat: Saji ank'o samnida, 2021 (discuss subscription business; subscription-based business; it is recent consumption trend; Instead of buying a product individually, customers subscribed to a service for the customized products to be delivered to the doorstep regularly) (DLC)2021403819

Wikipedia, Oct. 7, 2021 (Subscription business model is a business model in which a customer must pay a recurring price at regular intervals for access to a product; The model was pioneered by publishers of books and periodicals in the 17th century, and is now used by many businesses and websites.)

Forbes, Aug. 10, 2017 article, viewed on Oct. 8, 2021 (Subscription Businesses Are Exploding With Growth; subscription business companies send you a package, usually once a month, of items they've picked out for you; examples--Ipsy and Birchbox sell beauty products for women, Blue Apron and Home Chef deliver a box of ingredients for a complete meal that you cook at home, Dollar Shave Club sells men's shaving products, Stitch Fix sells fashion)

Consumer Contact Week, June 5, 2020 article; viewed Nov. 9, 2021 (The Rise Of The Subscription Economy -- How It Will Change Your Business, And Life; subscription business; subscription service industry)

Netflix and streaming video, 2022.