We sometimes put our products on special promotions or sales.
If the item you bought was put on sale right after you bought it, you can contact us in the first 24h of your order and we will refund you the difference.
When we create promotions that involve a coupon code for discount in percentage, if by some reason the code doesn't work when you make the order, please contact us and we will refund you the difference.
If you make the order and you notice there is a coupon code for discount available for that product, please contact us in the first 24h of your order and we will refund you the difference.