Saw this over on slickdeals.net. They aren't the fastest SSDs on the market but the two that I bought new awhile ago have never given me an issue.
Crucial M4 2.5" MLC SSD (Recertified): 512GB $150, 256GB $80, 128GB $50 + Free Shipping - Crucial.com Deals, Coupons and Promos
Crucial M4 2.5" MLC SSD (Recertified): 512GB $150, 256GB $80, 128GB $50 + Free Shipping - Crucial.com Deals, Coupons and Promos