Hello,
My service is at a rate of $10 per hour, so 15 billable hours.
I have worked extensively with Opencart including developing custom extensions and modifying the software to support adding millions of products. I'm very familiar with MVC architecture and design patterns, so I'm able to develop professional extensions that other programmers are able to understand. I guarantee I can do this in less than 7 days. I'm available on a variety of instant messaging platforms including Skype. And I'm available every single day. If you need more information, please feel free to ask away. And don't forget to check out my rave opencart reviews! Looking forward to working with you! :-)