I am a Website developer and fit to do your work. and i can complete it in 1-2 Days.
I can make an E-Commerce website for you. It would look 1000 times better than your existing website. I am not saying that your current website is bad but after seeing the website even you will accept it. The website will provide you the following features:
The calculation of TAX and Stock will be automated. you will receive an E-Mail if the stock is going Short.
It would not look less than a professional website, where your customers can come up, signup and create an Account, Login and then Shop. They can search for their desired product and can add it to their cart. You can also provide COUPON CODES if you want and they can use them to avail some discount. They can make Payment through Cash on Delivery, Online methods i.e. NETBANKING; CARD payment; Wallet Payment; UPI payment, etc. You can specify in which region do you want to deliver the product and the customer whose postal code is not in your specifications cannot buy the product since the delivery in that location would not be Available.
It will have all the features which the big companies(MNCs) have i.e. Amazon, Flipkart, etc.
Waiting for your response...
Thank you Sir/Ma'am,
Hope you have a Good day.