curl --request POST \
  --url https://api.scalev.com/v3/stores/{store_id}/public/checkout/summary \
  --header 'Content-Type: application/json' \
  --header 'X-Scalev-Storefront-Api-Key: <x-scalev-storefront-api-key>' \
  --data '
{
  "items": [
    {
      "type": "variant",
      "variant_id": 2,
      "quantity": 50
    }
  ],
  "payment_method": "bank_transfer",
  "courier_service_id": 123,
  "warehouse_unique_id": "<string>",
  "courier_aggregator_code": "<string>",
  "shipping_option": {
    "courier_service_id": 123,
    "warehouse_unique_id": "<string>",
    "courier_aggregator_code": "<string>"
  },
  "selected_shipping_option": {
    "courier_service_id": 123,
    "warehouse_unique_id": "<string>",
    "courier_aggregator_code": "<string>"
  },
  "shipping_cost": "<string>"
}
'

{
  "product_price": "<string>",
  "shipping_cost": "<string>",
  "other_income": "<string>",
  "other_income_name": "<string>",
  "gross_revenue": "<string>"
}