OP, you'll have to elaborate on your question if you want specific help. What are you trying to sell?
Escrow sites are more risky, as there aren't many well known sites around here. A google search brought up
https://escrowmybits.com, however I cannot vouch for them.
I'd recommend a bitcointalk escrow, someone else posted a full list of them.
Out of the list, I'd recommend PsychoticBoy as he escrowed a trade for me with no problems, but look over them and see which one you think will be the best.