Nail deals

Only products with a price seen at two or more stores in the last 30 days appear here. The deal price is the cheapest offer checked in the last 14 days; if a cheaper offer was seen in the last 30 days, the product is left out. The discount is measured against that same offer's median price over the last 30 days, with each price counted for as long as it held: for half of the tracked time the price was at or below this value, and for half at or above it. Stores are not checked every day, so an earlier price counts for at most 14 days after it was first recorded, and the offer's tracked history must cover at least 14 of the last 30 days. Only discounts of 5% or more are listed; gaps of 50% or more are treated as data errors.