As others have mentioned, figure out what bike
(s
) and size will fit you best and then be patient and look for it specifically.
One tip I can give is, if possible, have the seller take it to their local bike shop for an inspection. I did this with my first tri bike. It was a great deal but 4 hour drive. I had his LBS call me and verify that it was in sound condition
(they were the ones that he used for upkeep
).
Pay attention to what components & wheels it has. After the frame, these are the next two most expensive things on the bike. I recommend at least Shimano 105 or SRAM Rival for components... but that's just my opinion.
Consider other costs...
1. How worn are the components? If it needs a new chain or chain ring or something, you'll need to factor that into the cost.
2. Does it come with pedals, tires, bottle cages, computer, saddle, etc? Again, you'll want to pay attention to this so that you can accurately compare it to other bikes.
3. Shipping cost.
Lastly, I would say not to rule out buying from a local shop. Many shops throw in a basic fitting with purchase of a bike
(if not, I recommend asking them to
). Some also throw in your first tune up for free. You'll be getting warranty with a new bike. Some LBS even sell used bikes.
Hope you find an awesome bike.