Used bicycles are a win / win proposition. I've heard people voice their concerns that used bicycles are not likely to last as long, that they'll break down sooner just because they've been used more.

But anyone that rides bikes regularly knows that there are just going to be repairs to have done from time to time, whether the bike is second hand or brand spanking new.

If you live in a larger city there are whole sub-cultures of bike riding enthusiasts and these people can be some of your best allies in finding out where the best bike shops are, which bike shops deal in used bikes and / or offer reasonably priced and quality bicycle repair services.

If you live in an area that has some independent publications next to the major newspapers, pick up a few. Chances are you'll find some ads for some of the cooler bike shops.

And nearly every town or city has Salvation Army centers and other resale shops like that. These are wonderful places to find used bicycles. Just be sure to call ahead and find out if they have any bikes. Sometimes, especially in larger cities, certain types of items will all be at one particular location. It's better to know ahead of time if you're going to the right location for the best chances of finding a bicycle.

There are also online auction websites where you can search auctions by location. This way you can search all the new and used bikes for sale from auction sellers that live close to you. When you take shipping costs out of the online shopping experience, many viable items and options come to light.

Then there's also the good old classified ads in the local newspaper. If you don't see something right away, keep checking back every week and you're sure to come across some used bicycle ads eventually.