Android-Server Communication Demo App

Hi there, I am writing an app which will need a communication channel with webserver. It will send data to server and request an answer. It will be sent the paramaters of the object and on the server side will be proved if the object exists and if so the price. Please write "Mega Gauss" in your bids to show that it is not a spam. I will kindly wait to your offers. Please take into account that it is a low budget project. Thank you and happy bidding.