A best bet is the
Olay 2.5-oz. Regenerist Advanced Anti-Aging UV Defense Regenerating Lotion (pictured) for $10.67 with free shipping after you clip the coupon and buy it via Subscribe & Save. That's the lowest total price we could find for this quantity by $16. It features an SPF of 15.
Be sure to cancel Subscribe & Save once your order ships to avoid being billed for subsequent shipments.