Trek 1500

[El Dodgius Bastardo]

After my first 94.7, I'm thinking of buying a road bike for the 3 or 4 events I might do in a year. I plan to spend most of my time on my MTB, so I'm not looking at spending a lot on a bike that will be hanging on the garage wall. I've found a Trek 1500 (circa 2006 or so) with full Ultegra groupset for R4k. Not knowing road bikes very well, I'd like to get some opinions on whether this is worth it for the money or should I hold onto my cash until something better comes along