Seems high imo. Maybe meet her halfway at $225?
There is a member here that makes really cute and nice inserts for Mountain Buggies
http://www.nummybaby.com/ http://www.car-seat.org/member.php?u=2179
I have never seen an older model. I have a 2007 model and really like it. The seats are a bit short, but as Jools said you can open the canopy for an older child to ride.
The stroller itself is a lot shorter height and length wise to say a Baby Jogger City Series. If the handle is a fixed height then I would recommend pushing the stroller yourself when you go to look at it. I say that because even my adjustable handle on my MBUD seems short. I feel that I have to have it in the highest position to feel comfortable. Then again I am almost 5'10".
They really push and steer like a dream. They are very responsive on the front end, and have a wonderful shock system. Perfect for offroad, or uneven paths and sidewalks.
As far as things to look for:
Check fabric for rips tears and stains
Check tires for wear
Check wheels for any issues
Push it around yourself
fold it
Open it, then do it again
check the brake
Good luck! I think they are wonderful strollers!