My daughter and my wife both drive a Prius, 2007 and 2009 respectively. No real issues with either at ~95k miles. They have an outstanding reliability record in general. One of the magazines tested a ~200k mile one and it performed on par with a new one with regard to mileage and battery. If you end up needing a battery at some future point they are readily available in both used and re-manufactured variants.
BTW, I am a car guy, and love fast cars. No matter. The Prius is absolutely my favorite daily use car ever at this point. Super frugal, reliable, and so roomy that you can fit bikes, lumber, furniture, and large dogs in the back. Sometimes concurrently! My daughter drove back home yesterday with an 80 lb. Doberman and a dresser in the back of hers. :-)