Build & Host API programmed e-commerce ready to work website

I have a website that the current programmer couldn't get setup with images. [login to view URL] Since he has failed at this I have found out that my supplier has a API setup that can be used on a website. What I'm looking for is someone to convert the api file to my current website or better option is start over & build a new API prefer some type of templete website. I don't have a large business so a small budget. Open to ideas and suggestions just ready to get this done.