Google now knows you have a broken laptop and can estimate how desperate you are to fix it.
Because it knows how desperate you are, it can increase shop prices proportionally.
You are going to pay the maximum they get you to pay.
That's algorithmic pricing.
The more companies know about you, the more they can predict and sell how desperate you are to other stores out there.
An internet-connected car knows much more about you than you realize. A smart TV also knows what you like. Your Alexa knows if there is a problem in the home.
Your internet privacy affects a lot more than pricing. Someone can somehow find your information online, whether they buy it from an information broker or from some of the many giant hacks. Then they can use that information to track you down and hurt you. Also, most people aren't looking at price comparison sites.