Update cart unit price to reflect of line item

[sofiamatulis]

PR Summary:

Original ticket: https://github.com/orgs/Shopify/projects/6397/views/5?pane=issue&itemId=30821952

Why are these changes introduced?

it makes sense to use the discounted unit price in cart (currently we don't). So we can use line_item.unit_price instead of line_item.variant.unit_price

UX: The unit price needs to show cost clarity of how much it will cost per unit values - the strike-through price is not important at this line level because we already display it on the total price with discount in a larger font size.

Demo links

Test cart page and cart drawer

• Editor

[KaichenWang]

Code changes look good!

Will this cause a change in the unit price value displayed in the storefront? If so, is there an example where we can observe a change in the cart (we could also add this to scenarios we need to test for)?

[sofiamatulis]

Will this cause a change in the unit price value displayed in the storefront? If so, is there an example where we can observe a change in the cart (we could also add this to scenarios we need to test for)?

Yes! the unit price will now include the discount which it didnt before.

Before: https://screenshot.click/10-26-phfku-dwv0v.png
After: https://screenshot.click/10-26-zsfgg-aq372.png