Oakley Vault cuts up to 85% off select men's and women's sunglasses, apparel, and accessories during its Mega Sale. With deals from $4.99, that's tied with our January mention as the highest discount we've seen from Oakley Vault in over a year. Shipping starts at around $7, but orders of $50 or more qualify for free shipping. Note that size availability and stock may be limited. A couple of best bets: