SiteLucent shows you daily:
The number of products for which sellers "own" the buy box. This we define as the buy box coverage. Or the share (%) of buy-boxes held by you as a seller or vendor.
Details of Third Party Sellers behind the button
With higher performance metrics than your direct competitors, you can increase your price and maintain your share of the Buy Box. If your competitors have better metrics, you’ll need to lower your price to keep the same Buy Box share.
There needs to be inventory of your listed item. Without stock, the Buy Box will simply rotate to another seller.