How can I add price increase as a percentage of the product price?
If you want to charge your add-on prices based on the currently selected variant price, you can change the price from absolute to percentage.
Clicking on the currency symbol on the price input will change it to percentage:
The app will always take the price from the currently selected variant and apply the add-on increase based on the configured percentage.
The product needs a price in Shopify
The percentage is calculated from the price of the selected variant in Shopify. If that price is 0, the result is always 0. The add-on then looks like it does nothing, because the total stays at the base price.
If a percentage price adds nothing, open the product in your Shopify admin and check that the selected variant has a price higher than 0.
Some merchants set the price in Shopify to 0 on purpose, because all of their prices are set in the app. If that is your setup, you have two options:
- Set a price for each variant in Shopify and let the app subtract it from the option prices. This is described in How can I show the base price on the collection page?. Please note that this setting applies to all of your configurations.
- Use the Price formula extension to calculate your own price from the other selections.
Percentages cannot be based on other options
A percentage always uses the variant price from Shopify. It cannot use the total of the other options your customer selected, because every add-on price would then have to be calculated from every other add-on price. If you need a price that depends on other selections, use the Price formula extension.