One object.
Cart to refund.

1// 1. Create a product for each item
2const gym = await stripe.products.create({
3  name: "Gym Access",
4})
5const training = await stripe.products.create({
6  name: "Personal Training (4x/mo)",
7})
8const nutrition = await stripe.products.create({
9  name: "Nutrition Plan",
10})
11
12// 2. Create a price for each product
13const gymPrice = await stripe.prices.create({
14  product: gym.id,
15  unit_amount: 4900, currency: "usd",
16  recurring: { interval: "month" },
17})
18const trainingPrice = await stripe.prices.create({
19  product: training.id,
20  unit_amount: 12000, currency: "usd",
21  recurring: { interval: "month" },
22})
23const nutritionPrice = await stripe.prices.create({
24  product: nutrition.id,
25  unit_amount: 2900, currency: "usd",
26  recurring: { interval: "month" },
27})
28
29// 3. Create the subscription with each item
30const sub = await stripe.subscriptions.create({
31  customer: "cus_xxx",
32  items: [
33    { price: gymPrice.id },
34    { price: trainingPrice.id },
35    { price: nutritionPrice.id },
36  ],
37})
38
39// Want a 7-day trial? Add trial_period_days.
40// Setup fee? Add a one-time price to
41// add_invoice_items on the subscription.
42// Contract term? Build it yourself.