How to add a third party link to my Shopify account for customers to complete purchase

[TSAShop]

I would like to add a third party link to a product that acts as a buy now or add to cart button. I need this because I am selling ebooks and printed books on my Shopify store but I'm only able to sell ebooks because I do not have the capability to sell both due to an inventory and storage facility deficiency. I decided to allow Amazon to handle the printed books transactions and I have a link to my Amazon bookshelf to share on Shopify. Otherwise I will have to market Amazon in my product commercials instead of Shopify. Please help ASAP. 

[gr_trading]

Hi @TSAShop ,

Seems, you are looking for a way to redirect your Shopify user to your affiliate or your Amazon product URL.

We can enable this feature to your store where you will able to enter the URL and Shop name and button will be visible at store. User can buy from your store or visit to Amazon or any URL to purchase your product.