FWIW, I recently sold my 1994 Trek 2120 (triple-crank version of the 2100) for $250. I gave it a top-to-bottom cleaning and it hand brand-new BB, cables, and chain. It was mechanically perfect, but there were quite a few nicks in the paint. A 1999 2100 might be worth a tad more; it's a decent bike but nothing special.