Well, this is cute. I looked up an #AirCanada flight in Firefox and then pasted the URL into a Chromium window where I was logged into my Aeroplan Super-Elite account. Air Canada added $300 to the flight price when I tried to load it from a logged-in browser. Hell of a customer loyalty perk!
I bought the ticket in my non-logged-in window, then added my FF number to it.
@pluralistic and prices are higher when you search with an expensive tool like an iphone or ipad. I tested that already 20 years ago(!) when I had to book flights and hotels for my managers. And today they cheat you even more.