I'm letting go of one of my beasts. It's a Gary Fisher hybrid with front shock--a very comfortable bike; I rode it all winter. But I've ordered a new Trek 520, and don't need this bike now--it has served its purpose. With tires, rack, computer, bar-ends, stems for for new seat and bars, clips, etc., I have over $500 into this bike. Since the bike is only 6 months old, what is a fair asking price? Serious responses please.

Urbanmonk