Hello
I have read your requirement, we can develop a back end or admin for that in which you can edit price, upload products,manage things and many more functionality as you need. I have already worked on same thing. You can check my work in personal chat.
Highlights of my qualifications include - E-Commerce Development - Magento Developer - PSD to HTML5, HTML, CSS, CSS3, PHP, PHP5, javascript, MySQL, AJAX, JQuery, Bootstrap. - Front-end & Back-end Website
Please feel free to contact me for further discussion over project detail.
Regards
Gaurav