Are you having to short sale? If so, then a bank will pick up the closing costs. Get yourself a good agent. If you don't have to short sale, CONGRADULATION! Local papers and online services. Most buyers will take an extra 6% off a price only because there is no agent involved. If you are willing to cooperate with agents... offer them 4% commission! This will give them an extra incentive to sell yours rather than someone only offering 3%.
My suggesion is to give youself a brief period to try on your end, and be sure to cooperate with agents. Exposure matters greatly, you can't reach Trulia, but it you do list on the MLS you will get here.
If you succeed on your own, great! If not, then hire an agent to help you.
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No, trulia does not take FSBO listings. You can list your home with a discount brokerage that uses the MLS and your listing will probably end up on Trulia. Check with the brokerage before you pay if that is important to you.