Dear sir,
we have exactly same type of app developed in Phonegap. The name of the app is "GOEE" and is currently published both in Google Play Store & Apple App Store. The corresponding site is http://www.goee.in.
Hence, we have expertise of building similar types of app. We can start working for your app on immediate basis.
Our Price is based on one phonegap programmer for 1 month (160 man-hour). Once we can know the detail requirement of your app, we can tell you the exact price. However, such app with standard requirement will take around 250 man-hour..
Please feel free to contact us if you need any further information...
Thanks & Regards,
Abhranil Saha