How many items
Price per item
2-letter state code
Output the total price. Give a discount based on the total price, add state tax based on the state and the discounted price.
Target is 5 discounts, 5 states.
I want 5 states before doing anything with discounts.
Why? (so we can deploy! State tax is a legal requirement, discount is not)
Validation & fancy GUI comes after 5 states & 5 discounts. Don’t spend any time on that before!
Somewhere along the way you should reach the “order value” milestone - where you have 2 inputs (“# of items” & “price per item”) and multiply them. No discounts/states.