If you are a Shopify Plus store, you can add additional charges to your options.
Requirements
You need to be on the Shopify Plus plan.
You need to create your options first.
Create a charge
For dropdown lists, radio buttons, checkboxes, and swatches
Click Options, then click the option you want to add charges to.
Click the Add charge button next to an option value.
Select whether you would like to charge a fixed amount or a percentage based on the product’s price.
If you select a fixed amount, enter the amount and then click Create Charge.
If you select a percentage based on the product’s price, enter the percentage and then click Create Charge.
The percentage will be charged from the product price, not the order total.
Add charges to other options if needed.
Click Save.
Your customers will see additional charges for this option on the product pages.
For text field, large text field, number field
Click Options, then click the option you want to add charges to.
Click the Create charge button.
Select whether you would like to charge a fixed amount or a percentage based on the product’s price.
If you select a fixed amount, enter the amount and then click Create Charge.
If you select a percentage based on the product’s price, enter the percentage and then click Create Charge.
The percentage will be charged from the product price, not the order total.
Click Save.
Your customers will see an additional charge for this option on the product pages.
