I signed up for Trupanion last year. At the time they were just pushing through a massive rate increase to certain customers, yet they were still offering me a decent rate. I asked them about that and they assured me that this was an unusual occurrence and that only certain outliers were affected.
Now one year later it is me getting the 50+% rate increase for no apparent reason other than the desire to soak their customers and line their own pockets. Bye bye.
BTW, even before they did this I was considering switching. One of my cats had a upper respiratory infection when she was a kitten, not at all uncommon for kittens. She got some meds, and a week later got a clean bill of health. 6 months later she had a re-occurance, and Trupanion told me that all future such claims would be denied, because it was a "pre-existing condition". Really? A viral infection? Oh well, glad I'm switching to a more legit insurer. I'd urge others to do the same.