I see that you are from the area of 90035 which is the Beverlywood area. There are no duplexes available in that price range at all in the Beverlywood area. In the last 3 months only 2 duplexes sold in that area. The average days on the market for duplexes right now is 94 days. On the 2 duplexes that were sold the average days on the market was 244 days. There are 2 duplexes in escrow right now and one is looking for a back up.
When you are selling a duplex it depends on how many bedrooms each unit has, the condition of the place and how large it is. If you price it in such a way that a buyer can break even if they rent out the units than you should be able to sell it pretty fast.
Let me know if you need any more info or help. I'll be glad to assist.
Keller Williams Realty Beverly Hills