Man, 30k 2006.... that thing needs to be checked out by a rover tech. on the one hand that's no miles, on the other has it had ANY fluids changed ever, filters, etc ? Could be water condensation in things where it shouldnt be where you cannot see it simply from sitting never ran at 100% temp very often or not in several years now.
I'd want to see real history of the miles. 30k could be all in 2007 or 3000/year every year since bought. My mom drives less than that now, BUT when she does go out, it's like a 50-100 mile 2 lane highway round trip with only one stop/restart. Only running errands in town would be less good for the systems.
Really, price is the answer. Everything is good at the right price
I'd still call an '06, and '06. Especially because there are definitely some things to replace on an '06 and with those low miles, I would be surprised if ANY item has been replaced. So you'll get to do all of them in the next 70k