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Haakaa Official Store via Amazon.com [amazon.com] has HaaKaa Manual Breast Milk Pump with 4 oz container on sale for $ 13.94 when you apply promotion code U3DUDS8A and clip additional 20% off coupon on product page. Shipping is free w/ Prime or on orders over $ 25.

4.0 Fl Oz model [amazon.com] is available for $ 30.99 > $ 13.94