Extended through today, GNC offers three select items (GNC Mega Men Energy & Metabolism Supplement pictured) for $24.99 plus a flat $1 for shipping. That's $8.66 per unit, tied with yesterday's expired mention, and yields many price lows. (For further comparison, we saw a 4-for-$24 promotion in January.) Sales tax is added where applicable. Choose from bath & body, diet support, and more.