Purchase
Purchase Adjustments (positive or negative) that should be applied to the total order value. Title and price (in cents) are required. The amount should be negative to factor in a deduction to the final price, such as a discount; the amount should be positive to factor in an additional cost, such as shipping.
Recommended keys:
tax – Taxes applied to order
shipping – Any shipping and/or handling fees applied to order
discount – Discount off order from promotion code, coupon, etc.
gift_card – Amount of order covered by gift card payment
gift_wrap – Additional fee for gift wrapping.
credits – Amount of order covered by account credit
tip – Any gratuity added to purchase