You can check your order history to verify if a promotion was already deducted from your order. Here’s how to review your orders:

1. Sign into your Costco.com account and select My Orders.
2. Click on the appropriate order number. This will display the Order Summary, which will include any discounts deducted from your order:

If you still notice a difference between a current promotional price and the price you paid for an item, you can request a price adjustment.