I want to make a checkout flow similar to this page: https://baileynelson.com.au/collections/glasses/ where, after you chose the glasses you want and "add to chart" you have to follow a flow where your choose the reading or distance prescription, then thickness of the glass etc before you arrive at the checkout to pay. In each step, the additional const of each specification is added.
I am a developer, so I do want to code it myself without using an app/extension.
Please help! :)
Its possible to achieve this without app but need deep customization.
You just have to use line items, js, html and css a/to your need.