Dear friend
I am a PHP and HTML programmer with 5 years. I am familiar with PHP, HTML and CSS languages. I am lot of experience in building website using PHP and MySQL.
I propose to use wordpress and woocommerce to build your website. It is the most popular ecommerce system. And it have very richful template and also easy to extend the functions. It is a very cost effective solution compared with build a website by very bottom level coding from cost perspective.
It has lot of promotion plugins can help you promote your products such as membership and reward points.
Although I am a new freelancer, but I am full of passion to provide good service to my customer. Hope I have the opportunity to provide the service for you.
Best Regards
Xin