The Cart page shows a summary of the items and quantities added to their cart, and a total of how much it will cost them. With Grid, customers can also add order notes for the merchant and estimate their shipping fees on this page.
Accessing theme editor settings for the cart
To access the settings for the cart page, go to Customize > Select the cart icon > In the left-side settings, open the Cart page section. It is worth adding a few items to the cart before making changes to the settings here, as some of the features depend on added items for their display.
Enable order notes
Enabling Order notes will create a text box at the bottom of the cart page where customers can add "special instructions" about their order. You can add instructive or suggestive copy for this area in the Placeholder text field.
Enable shipping note
Enabling Shipping note allows you to display text stating that the cart total does not include taxes or shipping (or something else below the total). If enabled, the Text you enter will appear just below your cart total.
Enable shipping calculator
Grid also gives you the option to Enable shipping calculator, a tool that automatically fetches shipping rates on the cart page of your store, letting customers calculate their fees before completing checkout.
Click the Enable box, then use the text box to set your Default country. If you're unsure of spelling, you can refer to the dropdown on the first page of the Shopify checkout process. Note that if a customer has logged in and configured their shipping address their country will automatically be used.