The “Compare at Price” is commonly found on websites that show a higher price as a “suggested retail” with a lower price being displayed.
Here is an example:
Using the multiplier tool will work the same for the markup.
You always want the Compare at Price to be higher than the Retail Price to represent a discount.
Example using the multiplier tool with a $100 product:
Retail Price: 1.7 markup = $170
Compare at Price: 1.9 markup = $190
Example using the price Fixed Markup tool with a $100 product:
Retail Price: Add $50 = $150
Compare at Price: Add $70 = $170
To learn more about how the multiplier tool and fixed markup tool work, check out this article: How are the prices calculated with the markup tool