Shopify Theme and Layout Customization

Hi everyone,

I need some small changes to my shopify website. I have a ebook website and want some features like https://www.booktopia.com.au/.

1. I want the Instant Delivery Option in the product/collection pages
2. I want to add some feutures like where can the ebook be used. ex Read on:
-Android
-eReader
-Desktop
-IOS
-Windows

That is my current website www.epiceread.com

My budget is 10-15$.