Looked up the paperwork. My post wasn't quite correct. Bought our 2006 Prius new, traded it in 2018 with 110,000 miles on it. As I recall, the battery (really batteries) began to go at a little over 100,000 and was replaced at around 101,000. I traded it in 2018 for the Kona. As I recall the dealer wanted a little over $2,000 for the battery job, but I got a rebuilt from a 3rd party for about $1,500. Here's what I'm currently seeing on the Internet about Prius battery life.
"Toyota says a Prius battery will last between 100,000-150,000 miles or between 8-10 years. However, there are owners that have eked out far more mileage, as well as others who’ve reported fewer."
https://www.thedrive.com/cars-101/38127/prius-battery-life
I owned the car (and liked it) for more than 10 years, so battery life may have been normal for those days. On the other hand, technology being what it is, maybe these days it's better? Anyhow, hybrids will one of these days be a thing of the past. The future is all electric.