I agree with everyone so far, except that the Chevy Volt is not nearly as reliable as the Prius. Saying the 3rd gen is not as reliable as the 2nd gen is not saying much, as they are all reliable. I recommend going for a 2016 if you can afford one because it is a better car. The gen 4 styling is love it or hate it. I like it much more than all the previous gens. I recommend going with the regular Prius liftback, not the Prius v. The Prius v just gets worse MPGs and is even slower. We have persuaded three of our family members to buy a Prius and they all love them. I advise you to not buy a Plug-In Prius, because those were expensive and only give you a tiny EV range. The Prius Prime is good though. The Prius C is a reliable car, but otherwise is pretty bad and is based on the Toyota Yaris.
We have owned two Prii: a 2005 with 250k miles and a fully loaded 2016 with 40k miles. Both bought new. I am actually buying a Mazda3 today to replace the 2005 Prius. It is at the end of its life. It has never had ANY problems until this year when the A/C broke three times and the HV battery (the big one) died. The total for repair costs this year was about $6,000. That is too much for me. Despite this, the car is amazing and you should only be worried about buying one if it had an accident or a bad CarFax. With normal maintenance, forget about going to the shop for repairs and paying a lot for gas. I'm still on my first set of brake pads in my 250k mile Prius.
The engines are bullet proof, with the exception of some burning oil. My 2005 burned oil and now it doesn't for some reason. The 2010 is the most likely to burn oil. The 2015 should be the most reliable year of the Prius because it is the last year of that model, when Toyota has sorted out all the quirks and problems. The main problems with the 3rd gen are headlights that don't work (it has been a problem with gen 2 and 3) and oil consumption.
The 2nd gen (2004-2009) was a revolutionary car. The 3rd gen (2010-2015) was less so, but still an excellent car that will last you for years. Some criticize the 3rd gen for feeling like a rental car with all the cheap plastics inside, but it is personal preference. The difference of the 1.5L and 1.8L from gen 2 to gen 3 (or gen 4 in my case) is huge. The 1.8L is much quieter and more efficient.
The link you provided looks really good looking at the CarFax and would be a steal in my area. It is a trim Four with no option packages, which is a good trim because it comes with with JBL and SofTex seating. If you want fully loaded, the gen 3 has the trim Five, which includes bigger wheels, option packages that bring active safety features, and more.
I don't think going CPO is worth it with a Toyota. Toyota builds excellent quality cars that rarely ever break down. I recommend getting everything inspected buy a mechanic. I'm going CPO with my son's Mazda3 because I've only owned one Mazda in the past. It was reliable, but it isn't a Toyota, so it probably won't be as reliable. Mazda's CPO program gives you a 7 year/100,000 warranty which is worth at least $1k for me.
They sell quick, so go get it!