Vendor has configured some non-zero tax and assigned it a service plan category. Option
INCLUDE_TAX_TO_PRICE in Billing Control Panel > Products > Online Store > More > Advanced Settings is set to "true" and are displayed correctly in Online Store.
But prices in CCPv2 Marketplace tiles are shown without taxes included though the orders are created with correct amounts.
Tax Display Settings configured to show pre-tax prices and calculate the full amount during final order preview.
Open Billing Control Panel > Settings > Customer CP and change "Display Rule" parameter to "Always calculate and display prices with tax".
This parameter and the other ones of Customer CP tab are described in section "Configuring Customer CP Settings" of our official documentation.