My client needs to build a clone of twitter with Ajax,Jquery effects. User should not be redirected to twitter site but on his own server.Features should be : 
A. Dynamic Statistics of a user like
1. 5 tweets today
2. 2.9 tweers per day
3. 5% reply rate
4. 500 Followers

B. All tweets of a user

C. Reply for a tweet using Ajax/Jquery
    Reply should popup a window to reply for a tweet.user should not be redirected to twitter site for Reply.

D. More feature like twitter thru Ajax/Jquery

Show the sites as per the features specified above.

Plz provide estimate and cost....

No upfront payment. If all this goes well,My client will go for the complete clone of Twitter..Only providers having experience with PHP,Twitter,Ajax/Jquery can apply otherwise will be rejected.