Not to discourage anyone, but be VERY careful with CycleTrader. There are scams all up and through their adds. Be sure to consider only the ones you can go have a look at. Ignore all adds with the following criteria:
1. The seller is overseas
2. The bike is in one place and the seller is in another
3. You can't see the bike in person before purchasing
4. The phone number is bogus and you have to use their email only
5. The seller claims the shipping cost is included in the price.
If you choose not to ignore, them, then please keep your eyes open for any warning signs. I know this seems like a lot, but I run into my share of scammers, and the MAJORITY of them have come from CycleTrader. The above, of course, also apply to any other classifieds/online sellers. And trust me, there are some on ebay as well.