Display product price twice on same product detail page

On a product detail page, there is shown the total price that can be calculated thru custom fields. We want the calculated total price to be displayed a second time right next to the "add-to-cart" button on the same product detail page. Pasting „echo shopFunctionsF::renderVmSubLayout('prices',array('product'=>$this->product,'currency'=>$this->currency));“ for a second time in the template does not solve the problem. The second price is then shown, but not calculated by the custom fields. We require - once the job is done - all modified files.