That is kinda what I was thinking Steve . The people have had a ton of people looking at the car but they don/t want to pay that kinda cash . He changed his ad last night to 10,500 firm & don't bother emailing a lower price.Well that is the nature of Kijiji; ppl are wanting the buy of a life time.
I have been viewing Kijiji Owen Sound, Kitchener, Barrie, for sleds because we are in the middle of a serious melt and typically in the best of times February is the last month for snowmobiling. So it's a sleding disaster at the present, however a great time to strike. I have been watching the same guys drop week after week and I have been calling ppl and low balling. That is the nature of Kijiji. I always get a kick out of the ppl who say "firm".
However, in your case with this Corolla, these kind of offering don't come along very often, opposite of my sled searching situation, so firm probably means firm. The nice thing for you is that if the ppl weren't holding to "firm", it would be gone already.
"top dollar" paid can only be assessed at the end of the ownership period. Honestly, those Corollas are so frickin reliable. If you're not one to stop everything and fix your daughters car in the garage when she comes home on the weekend then this car is for you.
What is your "sales tax" situation? Is it on the honour system.

Bring cash or half cash and get a Bill of Sale for $5500. That will help. I have never had a private seller refuse a "reduced" Bill of Sale" amount and I have bought off every segment of society; cops, lawyers, what have you.
I'd go for it if all checks out. Do a Car Proof just in case. She will like the leather seats. Big improvement over the cloth in that model.