Staples has some of the best deals this holiday season on iPads with iPad Mini w/Retina for $199 and iPad Air for $299. They also have the 32GB iPad Air for $349. Not all units are available for ship but they are available for in store pickup in most areas.
Best Buy currently has the iPad Mini with Retina display on sale for $325. They also have a promotion for $50 off any iPad with a student coupon code. Combine these offers and you can get the iPad for only $275 – this device retails for $399.
Link to Student Promotion page (must register your email).