My girl was looking for a dress for Halloween. Yesterday she found one on Amazon for € 35 and put it in the cart, but did not buy it. Today she looked it up again and it was € 50 so she asked me to look it up with my phone with my Amazon account - it turned out to be € 23 for me, less than half of what it’s for her!
I am using mullvad vpn as well.
I am saying that AdBlock premium has a different cost based on your location, which you can switch with your VPN.
Use uBlock origin instead. Cost is $0 forever, and it has the best adblocking by far.
You can augment that with an NextDNS account to do ad filtering at the DNS level. It is a pay service technically, but their free tier is very generous.