Not only that, but since I am unfamiliar with anything except the most-often mentioned manufacturers, I have no idea what kind of bike, or what it is worth based on a name. Sometimes I see nice specialized or other comparable bikes listed at a very reasonable price, but if those aren't caught right when they are listed, they are usually sold by the time I find them. My Mongoose is very old, has front suspension (which I hate), TD-Pro shifters,a nd derailleur. I spooned some smoother street friendly tires on it, but it doesn't help much. The cranks are made of plastic as well.