curl --request GET \
  --url https://api.steppay.kr/api/v1/products/{id}/prices \
  --header 'Secret-Token: <api-key>'

[
  {
    "id": 1,
    "code": "price_AbCdEfGhI",
    "price": 10000,
    "unit": "회",
    "planName": "단건 가격플랜 이름",
    "planDescription": "단건 가격플랜 설명",
    "type": "ONE_TIME",
    "enabledFirstSalePrice": true,
    "firstSalePrice": 1000,
    "claimMethodType": "PRE",
    "whenToClaimType": "FIRST_PAYMENT",
    "billingDate": 0,
    "maximumPurchaseQuantity": 0,
    "membershipExpirationDate": 0,
    "membershipExpirationDateType": null,
    "setupOption": {
      "id": 1,
      "name": "가입비",
      "type": "INITIALLY",
      "price": 500,
      "claimMethodType": "PRE"
    },
    "options": [],
    "volumes": [],
    "additionalBilling": null,
    "recurring": null,
    "createdAt": "9999-01-01T00:00:00",
    "modifiedAt": "9999-01-01T00:00:00",
    "plan": {
      "name": "단건 가격플랜 이름",
      "description": "단건 가격플랜 설명",
      "detailDescription": "단건 가격플랜 상세설명",
      "isHiddenFromShop": false,
      "adminName": "admin"
    },
    "firstSale": {
      "enabled": true,
      "price": 1000
    },
    "claim": {
      "methodType": "PRE",
      "whenToClaimType": "FIRST_PAYMENT",
      "billingDate": 0,
      "provideStartDay": 0
    },
    "basicServing": 0,
    "bundlePrices": [],
    "onetimeBundlePrice": 0,
    "order": 0
  },
  {
    "id": 1,
    "code": "price_AbCdEfGhI",
    "price": 8900,
    "unit": "회",
    "planName": "구독 가격플랜",
    "planDescription": "구독 가격플랜 설명",
    "type": "FLAT",
    "enabledFirstSalePrice": true,
    "firstSalePrice": 1000,
    "claimMethodType": "PRE",
    "whenToClaimType": "FIRST_PAYMENT",
    "billingDate": 0,
    "maximumPurchaseQuantity": 0,
    "membershipExpirationDate": 0,
    "membershipExpirationDateType": null,
    "setupOption": {
      "id": 1,
      "name": "가입비",
      "type": "INITIALLY",
      "price": 0,
      "claimMethodType": "PRE"
    },
    "options": [],
    "volumes": [],
    "additionalBilling": null,
    "recurring": {
      "id": 1,
      "intervalCount": 1,
      "aggregateUsageType": "SUM",
      "interval": "MONTH",
      "usageType": "LICENSED"
    },
    "createdAt": "9999-01-01T00:00:00",
    "modifiedAt": "9999-01-01T00:00:00",
    "plan": {
      "name": "구독 가격플랜",
      "description": "구독 가격플랜 설명",
      "detailDescription": "구독 가격플랜 상세설명",
      "isHiddenFromShop": false,
      "adminName": "admin"
    },
    "firstSale": {
      "enabled": true,
      "price": 1000
    },
    "claim": {
      "methodType": "PRE",
      "whenToClaimType": "FIRST_PAYMENT",
      "billingDate": 0,
      "provideStartDay": 0
    },
    "basicServing": 0,
    "bundlePrices": [],
    "onetimeBundlePrice": 0,
    "order": 0
  }
]