car pool and taxi sharing Iphone apps

We already have working version of the source code on iphone apps, and .NET backend. This project is to fix the bugs in the iphone apps and .NET backend. And need to go through the process to put the iphone apps into apps store; and deploy the backend to hosting website. So please quote the price based on the above scope, this is not a new development project from scratch. Key features of the apps we have developed: 1) standard registration and login features, plus password reset via email 2) User input from and to location, schedule, the apps match and display the matched list for both demand and supply sides 3.1) location field will lead to GPS feature (similar to Geotaxi Iphone apps) to get location 3.2) if no match, the route and schedule will be saved. There will be a batch job run everyday, if later there is match, the daily job will send email to both sides 4) then they can login and see the matched list, and use SMS and phone call to contact each other. 5) The matched criteria is From location within Xkm, and to location within Ykm, start time within NNmin.