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Get this Refurbished Asus Zenbook UX31A 13.3" Ultrabook with an Intel Core 1.7 GHz i5 Processor for $659.99 plus free shipping at BuyDig. This is the lowest price for a refurbished model by $39 and the lowest price compared to a brand new model by $160. It ships with 4GB memory, a 128GB solid state drive (SSD) and a backlit keyboard. There is no sales tax (except NJ).