Product Page Only Price Display

I am wondering if its possible, if by using CsCart v3 inbuilt or a 3rd party addon, to show on the product page a numerical figure based off a modified product price as well as some text. For example of what I am talking about using a product price of $20

This product is $18(Product Price - (Product Price/10)) ex GST

This text needs only to display on the product page when a customer clicks on a product, not in the cart or Bestsellers etc. Anyone have any ideas or suggestions?