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Banana Republic Factory [gapfactory.com] has Buy One, Get One free. This works on clearance styles. You can mix/match different styles; the discount applies to the item of lesser value. This also stacks w/ BANANA for extra 15% off. Shipping is free on pre-discounted total of $ 50+ (or $ 21.25 after coupons & discounts).

examples – prices before discounts:[LIST]