I think variants are your best bet if there are a limited number of options with different pricing.  Checkout  https://help.shopify.com/en/manual/products/variants/add-variants If you still want to use custom form fields with differential pricing you...

Thanks. I saw the button on demo store. It works well. Can you share the code for that so I can add it to my store's product pages as well? How do I contact you via skype?

Any examples of how to go about doing that? Would you be able to help with the code?

The code works well in collecting information on Product page and even works to have customization info mandatory i.e. it will not add to cart if it the info is not given.  But when someone clicks But it Now (dynamic checkout) the custom info is not ...

Did you solve this issue?

What did you replace {{ line_title }} with?  I have similar code in my Order Confirmation Notification.  Did you updated code look like below?<span class="order-list__item-title">{{ line.title }}{% for p in line.properties %}{% unless p.last == blank...