Retailers change prices all the time
The chart below shows how Amazon changed its prices for a product over one day. They do this in order to maximize their profitability and compete with each other. Initially, Amazon was the most sophisticated player, however, now almost every major retailer does this.
You are protected by price adjustment policies
Fortunately for you, most retailers also have price adjustment policies which vary between 7 days to 30 days. These policies are in place to protect you in case the price of something you purchased drops OR you forgot to use a coupon within that window. If this happens, then you are eligible for a refund for the difference.
Credit cards extend your price adjustment policies
However, the price protection doesn’t just end with retailers. A little known perk that about 50% of credit cards offer is price protection which EXTENDS the price protection provided by the retailer. Once the retailer price protection expires the credit card price protection kicks in as you can see in the image below. There are of course items which are excluded from price protection such as consumables (e. g. groceries, health and beauty), jewelry, motor vehicles etc…