Agree with pankaj981. I just bought my L900 2 weeks ago, and I spent weeks researching prices. Unlocked L900's are still in demand, and tend to sell for more. The color of the unit adds to the price as well. Unlocked black L900's crawl up into the 120$ range normally, though some do sell closer to 100$. If you own a cyan or white L900, those tend to climb a tad higher, usually 130$-140$.
My locked AT&T white L900 was 110$, and I had a 120$ limit, so I lost out on quite a few of them. Even locked onto the Evil Empire's network, they still tended to climb over 120$. Black ones again a tad cheaper as they are more common. I just really, really liked the white ones, so I just had to be more patient for the right deal.
This is in U.S. Dollars, by the way.