If you would consider a cross bike, KnottedYet is almost your height and rides this:
http://surlybikes.com/bikes/cross_check_complete
I think she likes it a lot. It's a little higher than your budget but you might be able to find one used, last years model, local bike swap etc.
My niece, UK Elephant and her mom (therefore my sister), Duck on Wheels are your height. UK rides a Specialized cross bikes.
In this thread she picks a bike:
http://forums.teamestrogen.com/showthread.php?t=5009
Ducks ride is a Trek flat bar road bike of some sort. Uhm, I know that it's red.Both of them are very happy with their rides I think.
Here's Duck getting her bike fitted:
http://forums.teamestrogen.com/showthread.php?t=30113
Now get out there and test ride lots of bikes for us because the tall TE gals want to read the ride reports.![]()