SELECT OOLV.order_number ORDER_NUMBER, 
       OOlV.line_number LINE_NUMBER, 
       OOLV.UNIT_SELLING_PRICE 
FROM OE_ORDER_LINES_V OOLV, 
     OE_LINE_TYPES_V OLTV, 
     OE_TRANSACTION_TYPES_TL OTTT 
WHERE OTTT.TRANSACTION_TYPE_ID=OOLV.ORDER_TYPE_ID
AND OLTV.LINE_TYPE_ID=OOLV.LINE_TYPE_ID 
AND TRUNC (OOLV.CREATION_DATE) BETWEEN '01-JAN-2008' 
                               AND '30-DEC-2008'
AND oolv.unit_selling_price <> (SELECT a.unit_selling_price 
                                FROM OE_ORDER_LINES_V a,
                                     oe_transaction_types_all b
                                WHERE b.TRANSACTION_TYPE_ID = a.order_type_id 
                                AND b.ORDER_CATEGORY_CODE = 'RETURN');