Something

@$totalCost += ($row["qty"] * $row["itemPrice"]);
			@$totalCost = $totalCost + ($row["qty"] * $row["itemPrice"]);
			
			$shipping = number_format($totalCost, 2, ".", ",");
			$shippingtotal = number_format($totalCost,2,".",",");
			if($shipping < 100.00 && $shipping > 0.01){
				//if great then 100 add the following
					$shipping = $shipping + 5.95;
				}elseif ($shipping > 100 && $shipping < 200){
				//if between 100 - 200 add the following value
					$shipping = $shipping + 10.00;
					}elseif ($shipping > 300.00){
				    echo $shipping;
				 	$shipping += 10 + floor(($shipping - 200) / 100);
			}
			
			$shipping = number_format($totalCost, 2, ".", ",");
			$shippingtotal = number_format($totalCost,2,".",",");
			
			
			$shippingtotal = $shipping - $shippingtotal;