Piping Rock cuts up to 89% off a selection of vitamins, supplements, and more during its Crazy Deal Sale, with prices starting from 39 cents. Shipping starts at $1.95. A couple of best bets, each with $1.95 for shipping: Of note, new customers can take $5 off sitewide or $10 off orders of $40 or more via coupon code "AADTP5".