I say try again. I just went to Ebay and see what everyone is bidding on for W810 and it seems everyone is bidding on it for at least $200 and up.
Usually, if someone set the start price to high, people tend to avoid bidding on it so maybe you can start your bid at $100 and (if you have enough feedbacks) set the reserve price for $200.
Also it helps if you have everything like the house charger, earphones, etc.
If you only selling the phone, people will think it was stolen or found and they will not bid on it.
It also helps if the phone is in excellent condition. (That's why I have Shield Zone and skin case for my phone.)
If you still want to sell your 8100 than I hope things will get better for you and I hope to see you back here again soon.