Magento get cart single item price incl. tax

Question

I have a pretty weird issue, I hope someone can help me with this.

Here are the major config settings that influence my problem:

• Catalog prices in admin pa

Answer 1

show the quantity of a cart in my header

if ($parentBlock = $this->getParentBlock()) {
$count = $this->helper('checkout/cart')->getSummaryCount();
if( $count == 1 ) {
echo $text = $this->__('My Cart (%s item)', $count);
} elseif( $count > 0 ) {
echo $text = $this->__('My Cart (%s items)', $count);
} else {
echo $text = $this->__('My Cart (0 items)');
}
}

show the total price of a cart in my header

$grandTotal = $this->helper('checkout/cart')->getQuote()->getGrandTotal();
echo $text .= $this->__(' Total: %s', $this->helper('core')->formatPrice($grandTotal, false));