The eye-tracking research was carried out by the ConversionXL Institute.
The point is to figure out the best way to highlight a “recommended” cost.
Prices ranged from $0 to $85 per month (“recommended”) and $166 per month.
Prove it with an A, B, C, or D
An unhighlighted $85/month plan is listed first, in the “cheap” to “expensive” order.
As a result, 16.92% of people opted for the plan.
Price range from least to most: 19.91 percent
Thirdly, the price range (high to low) not highlighted in any way: 23.04%
Four, the most expensive to the least expensive: 31.99%
If your pricing plans are listed from least expensive to most expensive, but none of them are highlighted, then applying variant #4 will help 89% more customers make the right choice.
Source: https://speero.com/post/the-effects-of-highlighting-a-recommended-pricing-plan-original-research