I went through this stage and I believe its been discussed on here in the past. The only concern with your post is that you are talking about 10km in on a unit or 12-13 km out on a house. 10 and 13 isn't really a significant different to debate on. If you were talking 10 km in or 30 - 40 km out, then that is a different story. I think the only uniqueness in your situation is that the house is a 15 min walk to the station or bus stop.
I guess it depends if you have kids who need to catch the train to school, etc. I feel sorry for these lonely kids who I see walk kms to get home cause their parents picked a place not near transport. This actually affects their social life in school.
In Sydney for example, you could buy an average house out in western Syd for about 500 - 700 k depending on suburb (not a crap hole joint). Within 10km, it would cost you about 600 plus to 800 plus for an above average to nice unit (not like a ground floor one facing another wall).
I ended up choosing a nice unit within 10km because I am not married, work in the city, drive into the city at least once or twice over the weekend. Time for me is priority one. At the moment, I spend just over an hour - door to door to get to work. That is driving half way, walking to station and catching train. If I drove all the way in which I do once or twice a week for work, it's about 1.15mins to 1.5 hrs. I drive some days because like some of you, we don't like public transport. Being in your car is a more comfortable feeling than some person sitting next to you on the train who hasn't showered for a couple of days. The less time on the train/bus, the better. Not to mention when you get squashed or someone decides to cough all over the carriage and contaminates everyone. Sorry to carry on but some people I know question why I would drive in...isn't it obvious. Driving is not for all; esp those who are not confident drivers.
When I move into my new joint, it's 13 mins on the train and a 3 - 5 min walk to the station. If you do the maths, I save a good 40 hrs a month of travel. Now 40 hrs is a week's worth of work that I could spend better than travelling. You can't buy time back and life is too short to be sitting on public transport for so long. I could sleep in an extra 30 mins, get home an extra 30 mins early, etc. Stay out in the city after work for a drink, dinner or shop without worrying about getting home in that 1 hr journey.
On the other hand, if I had 2 or more kids growing up, then I would buy a house out west and put up with the 1.5 hrs of travel each day. With one kid only, I would still do the unit over a house. As long as the unit is an above average size one (90sqm internal or larger).
By the way, my body corp fees are 1400pq. Standard costs for big complexes with pool and garden. I wouldn't worry about the fees unless they are like 2k plus. If you have your house, you will be spending one weekend a month doing the lawn, gardening, pulling the weeds out, cleaning the gutter, etc.