Areatrend via eBay offers the Oakley Men's Catalyst Sunglasses in Grey, model no. OO9272-03, for $88.32. Checkout via PayPal and apply coupon code "C20SPRING" to drop the price to $70.66. With free shipping, that's the lowest total price we could find by $27. They feature a square steel frame. Deal ends March 27.

Note: This coupon may be used once per account.