Checkout & Pricing Properties

window._upstack('track', 'purchase', {
  transactionId: 'ORD-12345',
  value: 134.99,
  currency: 'USD',
  subtotalPrice: 149.99,
  tax: 12.00,
  shipping: 8.00,
  discount: 35.00,
  coupon: 'SAVE25',
  paymentType: 'credit_card',
  shippingTier: 'express',
  items: [/* ... */]
});