public function getPriceHtml($product)
    {
        $this->setTemplate('catalog/product/price.phtml');
        $this->setProduct($product);
        return $this->toHtml();
    }

public function getPriceHtml($product)
    {
        $this->setTemplate('catalog/product/your_price.phtml');
        $this->setProduct($product);
        return $this->toHtml();
    }

$handles = $this->getLayout()->getUpdate()->getHandles();
if (array_search('catalog_category_view', $handles)) {
    echo 'here you can do other things';
}