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Amazon [amazon.com] has 6-Pack 32-Oz Califia Farms Organic Oatmilk (Barista Blend) on sale for $ 29.94 – 30% off when you ‘clip’ the coupon on the product page = $ 20.96. Shipping is free w/ Prime or on $ 25+ or $ 35+ orders (minimum requirement varies by location).
Note: Coupons are usually one use per account, possibly targeted, and YMMV.