Flash sales

Sold in a limited window of sales.
Limited supply of single product.

Benefit:
Control inventory, limit shortage and psychological market effect of inventory.
Limit excess inventory.
Production in small batch.
Direct-to-customer. Eliminate vendor (chain of diatribution) cost.
"CREATES ARTIFICIAL DEMAND" just like buying last ticket to Sold-out movie/concert. Selling on Hype. Sense of exclusivity and triumph.
The effect is exponential = network externalities.
Sensasion will make headlines.
Booking in advance for sales, creates initial numbers for strategic planning/forecast and for headline awalan sblm berita resmi penjualan hari pertama.
Sangat efektif dgn chat apps platform dan sosial media: memunculkan headline.

Purchase in bulk for people missing sales window.

Risk:
Lose potential sales. There are reasons for safety stock, you know.
Customer didn't buy in time.
Sounding (advertising) sales window cost.
Customer put off for waiting sales window, might choose competitor. Urgent needs.

Opportunity:
Beta testing: Invites most enthusiastic consumer for review and feedback.(with limited beta key, registered on limited window)