I'd love your opinion - good price for a Terry Symmetry?

[spotlightmama]

Hi - this is my first post, so hopefully I put this in the right place!

I am completely new to biking - I will be completing my first (but hopefully not last) triathlon in a few weeks and realized I'd rather not complete it on my lame, department store bike.

I found a used Terry Symmetry locally, but I'm not sure if it's a fair price. I've tried to research it, but I can't really get any info on pricing (and I don't have a local Terry dealer). Anyway, here are the specs:

Georgena Terry Symmetry womans roadbike. Purchased new & ridden 46 miles. Stored inside. Mint condition. All Shimano Tiagra Flightdeck componetry. Triple crank 27-speed cassette. Cateye Computer. Velocity Aerohead rims. Panaracer Technova tires. Clipless peddles. Quick release hubs front & rear. This bike was purchased for my wife, but she hasn't the time to ride.

They are asking $450 for this bike. Thanks in advance for your responses!!