Hi,
We are Unified Media Marketing Group, a web development and design company based in Michigan. I have gone through your project requirement, and I am confident that we can do a great job for you.
We have designed and developed websites using various tools for multiple industry verticals. We have developers who are pro in Wordpress, Magento, Opencart and Open Source Cart services. With a healthy and productive work ambience, our developers deliver the best even within tight deadlines.
You will have a single contact point to discuss your requirement and preferences. If you are looking for completely customized open source cart services, we are open to it.
We can discuss about your project and pricing in detail on chat or on skype.
Looking forward to hearing from you soon.