To price match the Buy Box price in a competition, you can follow the simple steps outlined below. 

Step 1: Choose "Match Buy Box" Rule

The default settings for Match Buy Box rule is compete with Buy Box Price and under "when Buy Box winner is above Min price", it is assigned as Buy Box Price - $0.00. 

Step 2: Advanced Settings

Advanced Settings can be turned on  and "When Buy Box winner is above Min Price" scenario can be set as the images attached below.