Woot.com has a 20" monitor with built-in speakers on sale for $39.99. That's a savings of 60% off the regular price. It has both HDMI and VGA ports.
To get free shipping, be sure to sign into your Amazon Prime account. Otherwise, standard shipping adds $6.
Find computer deals and coupons at the KCL site, and see how much you can save with an Amazon Prime account.