Living Social currently has a deal where you pay $25 for $50 of Incase credit/gift card. These pop up from time to time, but seems like a good time with their iPad mini cases coming out soon. Fine print says voucher valid until 3/1/2013.
http://www.livingsocial.com/cities/15-san-francisco/deals/507600-50-to-spend-on-iphone-and-macbook-accessories
http://www.livingsocial.com/cities/15-san-francisco/deals/507600-50-to-spend-on-iphone-and-macbook-accessories