The Psychologist described a storefront study conducted in the United States.
There were three different price points put via a series of A/B tests.
Set at $24.95 (control price)
Alternative 1: 20% For Three Days
Alternative 2 .variant: 30% off today, 20% off tomorrow, and 10% off the third day
Sales increased by 70% as a direct result of using Variation 1.
The second variant led to an astounding 200% rise in sales.
Source: www.markinblog.com