Hi Sir,
I have seen the URL you attached. I'd do this job for you to convert this website to WordPress. But Budget you mentioned is quite less and effort is 3-4 days Sir. I'd propose 150$ for this task and will provide you better version of this store in Wordpress. And Also if you increase budget a little more, I'll provide an Android App, ready to launch with the store that will be managed through the WordPress. That way you don't need to do anything with the App once delivered. And everything will be managed from the Wordpress.
Let's talk more about it in chat. I know your budget limitation, but this task worth the price i proposed. If you feel to get it done by me, I'm available and can start work on it right away.