SELECT DISTINCT e.employeeNumber, e.lastName, e.firstName
FROM customers c
JOIN employees e ON c.salesRepEmployeeNumber = e.employeeNumber
WHERE customerNumber IN (
	SELECT DISTINCT o.customerNumber
	FROM orders o
	JOIN orderdetails od ON o.orderNumber = od.orderNumber
	JOIN products p ON od.productCode = p.productCode
	WHERE od.priceEach < p.MSRP
);