There is a local small one man dealer that deals only in used Toyota's from a local dealer. He often has hybrids. I have watched his sales daily for a Prius and a 2008 Prius package 5 came up for a decent price and 119,000 miles. I had thought about other Prius he had with many more miles but this one fit the bill. My main concern was the hybrid battery but he warranties the battery for three years unlimited miles. My main driving is urban and I didn't really need another car but I am obsessed with the fuel savings; just because. I used to think the Prius was for the foo foo environmentalists but have become enamored about saving costs since I am near retirement. The Prius is over-engineered and a long lasting vehicle which I admire. Of course I did not know this when they first came out. I pick it up tomorrow. Wish me luck.
Good luck! I just picked up an 06 yesterday for much the same reasons as you. I'm looking forward to learning more about the car and enjoying it.