Booking Calendar for Joomla Customizing and decoding.

We have a PHP booking calendar component for joomla. This component allows visitors to pickup a date for booking and make a payment for the selected date. the booked date is blocked on calendar after booking. But there is some bugs and problems on this component. It is using paypal button but we want somebody to integrate this to virtuemart component. We have paid for this component to a php company but all codes are encoded by zend. We tried to decode them and did but some of them are not working properly. We are looking for somebody who can decode all files successfully and make required changes for us. We are adding files to this project please check them and let us know if you can do this or not. We are looking for something cheap and fast. Price is an important criteria on choosing winner. We want to pay max 50 USD for this because this is not a creation. All files are ready and you will just do some modifications on the files.