become a reseller program for online store script

Hello everyone! I come with a company to provide service of website creation for my customers. And i need classic online store script in which base on any open source (wordpress, opencart,...) or even framework in the world (cakePHP, codeigniter,..Yii..). because i focus on low cost for everone who need a shopping cart that can hosted on their hosting. As you know , my customer just using single license on single domain and they will buy this with price within 30$-100$ (included customize design). Also, you will help me create landing page to promote your product on my website. Thanks for bids this.