Question: 

The Tier pricing is showing improperly in the Product Page:

although the Subtotal is displayed precisely both in Product Page and Shopping Cart Page.


 

Answer: 

In this case, it is assumed that's because of conflict our module and RWD theme. To solve this issue, could you please replace the current file by this attached one on your site?
This is the path of file:

/app/design/frontend/rwd/default/template/bss/configurablegridview/type/configurable.phtml

 

Please note that, it's just the solution for your reference.

For more information about product, please refer Pro Configurable Grid Table View page.
If you need any further assistance, please feel free to contact us.

Please visit our site for more useful Magento 1 Extensions: https://bsscommerce.com/extensions.html