BR price_html error [#0000125]

gistfile1.aw

function _check_product_price($p)
		{
			$group_id = $this->EE->session->userdata["group_id"];
			// Deal with our price matrix 
			
			 foreach($p["price_matrix"] as $price){
			 	if(	$price["group_id"] == 0 || 
			 		$price["group_id"] == $group_id){

			 		$amt = array(
							'on_sale' 		=> FALSE, 
							'label' 		=> $price["price"],
							'base' 			=> $price["price"],
							'price' 		=> $price["price"],
							'price_html'	=> '<p class="price">'.$this->_config["currency_marker"].$price["price"].'</p>'  							
						);
			 	}
			 }

			foreach($p["sale_matrix"] as $sale){
				$valid = 1;
				$start = date("U",strtotime($sale["start_dt"]));
				$end = date("U",strtotime($sale["end_dt"]));
				if(time() < $start){
					$valid = 0;
				}
				if($end != 0 && time() > $end){
					$valid = 0;
				}
			 
			 	if(($valid == 1) && ($sale["group_id"] == 0 || $sale["group_id"] == $group_id) && ($amt["price"] > $sale["price"]))
			 	{
			 		$amt = array(
							'on_sale' 		=> TRUE, 
							'base' 			=> $amt["price"], 
							'label'			=> $sale["price"],
							'price' 		=> $sale["price"],
							'price_html' 	=> '<p class="price"><span class="original">'.$this->_config["currency_marker"].$amt["price"].'</span><span class="sale">'.$this->_config["currency_marker"].$sale["price"].'</span></p>',  
							'sale_price' 	=> $sale["price"]
						);
				}
			}
			return $amt;		
		}