When I bought it which was a month ago I guess, I managed to get xperia U for 16500 and xperia sola for 19.6K from saddar. (shop was opp bawany mob, dont rememeber name). I bought both together so he gave me a great discount.
However my friend who bought xperia u a little later found one for 17K.
Dont know about latest price bro but I guess its around 18K now. You will have to do some bargaining. Xperia sola, you will only be able to get used.
These phones don't have warranty so test every feature of em at the shop.