In my country coupon (or whatever else) in 1-15% range probably means that original price was raised and afterwards discount applied to simulate "sale". This is

In my country coupon (or whatever else) in 1-15% range probably means that original price was raised and afterwards discount applied to simulate "sale". This is also heavily influenced by the fact that most of products are imported and bought by dollars/euro and currency is fluctuating every day by several percents. Discount higher than 15% probably means that the product itself is not what I think - it is either refurbished or damaged or without warranty or expired or the market is lying to me somewhere or it is another product altogether. Any rare cases of honest discounts are statistically below threshold and can be safely dismissed - just threat all sales as a lie and you'll be almost safe, that's what marketers taught me.